Re: Power meter E4416A problem power on
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Show quoted text
Le ven. 18 f¨¦vr. 2022 ¨¤ 22:00, Vladimir Filip < vf@...> a ¨¦crit?:
You can check this Youtube video:?
Solving exactly the same issue as you have. It shows how to check
all power supplies and also how to switch on the instrument by
shorting specific contacts on main board what should tell you
whether your meter or just keypad are faulty.
Vladimir
Dne 18.02.2022 v 21:05 Mohamed Atif
napsal(a):
it can be a problem with the keypad or also a
problem with the motherboard an electronic component is
defective
Le ven. 18 f¨¦vr. 2022 ¨¤ 19:15,
Richard Parrish < Richard@...>
a ¨¦crit?:
The
switch contacts are laminated into the front panel
overlay.? Cheap to manufacture but the failure rate is
high after 4-6years of constant service.? The part number
is E4418-66502 Key Flexi Circuit ($302 from
Keysight) and is used in the E4416, 17, 18, and E4419.?
It might be cheaper to buy a defective power meter and
scavenge it for the overlay.? You can search ebay for
front panel overlay and you should find some for sale.?
I've seen prices range from $30 to 125.00 on ebay and
they're all selling the same item that is of course,
Make in China. . . .? There are some listed now for $27,
titled For Agilent/HP E4418A/B /E4416A/E4419A/B/E4417A
Press Key Film membrane keypad
Richard
How is the Price of this keybad in eBay.
Le ven. 18 f¨¦vr. 2022 ¨¤ 01:05, Mohamed
Atif via
<mohammedatif1968= [email protected]>
a ¨¦crit?:
Thanks for your reply.
what problem with this keypad?? my
power meter a month ago it works well I was on
vacation when I came back I turn it on the
orange button lights up but when I press the on
button nothing happens.
Le jeu. 17 f¨¦vr. 2022 ¨¤ 22:38,
Richard Parrish < Richard@...>
a ¨¦crit?:
You're
going to have to replace the keypad
assembly, this is a very common problem in
all the new series of instruments and the
E19xx series of meters.
Price
isn't too bad and you can find them for much
less on Ebay.
Richard
Hello,
I have agilent E4416A
series power meter. the voltages are
ok 12v,-12v, 5v and the battery
measures 2.9v the stand by light is on
but when I press the power button
nothing happens you can help me and
thank you in advance.
Best regards
|
Re: Power meter E4416A problem power on
You can check this Youtube video:?
Solving exactly the same issue as you have. It shows how to check
all power supplies and also how to switch on the instrument by
shorting specific contacts on main board what should tell you
whether your meter or just keypad are faulty.
Vladimir
Dne 18.02.2022 v 21:05 Mohamed Atif
napsal(a):
toggle quoted message
Show quoted text
it can be a problem with the keypad or also a
problem with the motherboard an electronic component is
defective
Le ven. 18 f¨¦vr. 2022 ¨¤ 19:15,
Richard Parrish < Richard@...>
a ¨¦crit?:
The
switch contacts are laminated into the front panel
overlay.? Cheap to manufacture but the failure rate is
high after 4-6years of constant service.? The part number
is E4418-66502 Key Flexi Circuit ($302 from
Keysight) and is used in the E4416, 17, 18, and E4419.?
It might be cheaper to buy a defective power meter and
scavenge it for the overlay.? You can search ebay for
front panel overlay and you should find some for sale.?
I've seen prices range from $30 to 125.00 on ebay and
they're all selling the same item that is of course,
Make in China. . . .? There are some listed now for $27,
titled For Agilent/HP E4418A/B /E4416A/E4419A/B/E4417A
Press Key Film membrane keypad
Richard
How is the Price of this keybad in eBay.
Le ven. 18 f¨¦vr. 2022 ¨¤ 01:05, Mohamed
Atif via
<mohammedatif1968= [email protected]>
a ¨¦crit?:
Thanks for your reply.
what problem with this keypad?? my
power meter a month ago it works well I was on
vacation when I came back I turn it on the
orange button lights up but when I press the on
button nothing happens.
Le jeu. 17 f¨¦vr. 2022 ¨¤ 22:38,
Richard Parrish < Richard@...>
a ¨¦crit?:
You're
going to have to replace the keypad
assembly, this is a very common problem in
all the new series of instruments and the
E19xx series of meters.
Price
isn't too bad and you can find them for much
less on Ebay.
Richard
Hello,
I have agilent E4416A
series power meter. the voltages are
ok 12v,-12v, 5v and the battery
measures 2.9v the stand by light is on
but when I press the power button
nothing happens you can help me and
thank you in advance.
Best regards
|
Re: Power meter E4416A problem power on
Richard it can be a problem with the keypad or also a problem with the motherboard an electronic component is defective.
Le ven. 18 f¨¦vr. 2022 ¨¤ 19:15, Richard Parrish < Richard@...> a ¨¦crit?:
The switch contacts are laminated into the front panel overlay.? Cheap to manufacture but the failure rate is high after 4-6years of constant service.? The part number is E4418-66502 Key Flexi Circuit ($302 from Keysight) and is used in the E4416, 17,
18, and E4419.? It might be cheaper to buy a defective power meter and scavenge it for the overlay.? You can search ebay for front panel overlay and you should find some for sale.? I've seen prices range from $30 to 125.00 on ebay and they're all selling the
same item that is of course, Make in China. . . .? There are some listed now for $27, titled For Agilent/HP E4418A/B /E4416A/E4419A/B/E4417A Press Key Film membrane keypad
Richard
How is the Price of this keybad in eBay.
Le ven. 18 f¨¦vr. 2022 ¨¤ 01:05, Mohamed Atif via
<mohammedatif1968= [email protected]> a ¨¦crit?:
Thanks for your reply.
what problem with this keypad?? my power meter a month ago it works well I was on vacation when I came back I turn it on the orange button lights up but when I press the on button nothing happens.
Le jeu. 17 f¨¦vr. 2022 ¨¤ 22:38, Richard Parrish < Richard@...> a ¨¦crit?:
You're going to have to replace the keypad assembly, this is a very common problem in all the new series of instruments and the E19xx series of meters.
Price isn't too bad and you can find them for much less on Ebay.
Richard
Hello,
I have agilent E4416A series power meter. the voltages are ok 12v,-12v, 5v and the battery measures 2.9v the stand by light is on but when I press the power button nothing happens you can help me and thank you in advance.
Best regards
|
Re: Power meter E4416A problem power on
it can be a problem with the keypad or also a problem with the motherboard an electronic component is defective
Le ven. 18 f¨¦vr. 2022 ¨¤ 19:15, Richard Parrish < Richard@...> a ¨¦crit?:
The switch contacts are laminated into the front panel overlay.? Cheap to manufacture but the failure rate is high after 4-6years of constant service.? The part number is E4418-66502 Key Flexi Circuit ($302 from Keysight) and is used in the E4416, 17,
18, and E4419.? It might be cheaper to buy a defective power meter and scavenge it for the overlay.? You can search ebay for front panel overlay and you should find some for sale.? I've seen prices range from $30 to 125.00 on ebay and they're all selling the
same item that is of course, Make in China. . . .? There are some listed now for $27, titled For Agilent/HP E4418A/B /E4416A/E4419A/B/E4417A Press Key Film membrane keypad
Richard
How is the Price of this keybad in eBay.
Le ven. 18 f¨¦vr. 2022 ¨¤ 01:05, Mohamed Atif via
<mohammedatif1968= [email protected]> a ¨¦crit?:
Thanks for your reply.
what problem with this keypad?? my power meter a month ago it works well I was on vacation when I came back I turn it on the orange button lights up but when I press the on button nothing happens.
Le jeu. 17 f¨¦vr. 2022 ¨¤ 22:38, Richard Parrish < Richard@...> a ¨¦crit?:
You're going to have to replace the keypad assembly, this is a very common problem in all the new series of instruments and the E19xx series of meters.
Price isn't too bad and you can find them for much less on Ebay.
Richard
Hello,
I have agilent E4416A series power meter. the voltages are ok 12v,-12v, 5v and the battery measures 2.9v the stand by light is on but when I press the power button nothing happens you can help me and thank you in advance.
Best regards
|
In my HP5345A I have EBM-Papst 4606N fan. This type is still being produced, it is 115V/20W with 106 CFM but it is 51dB(A)! Counter is specified for operating temperature from 0 to 55 degC. As we don't have 55degC in our homes, I am sure lower CFM will work fine.
The most silent fan I have found is 22dB(A) but just 53CFM - type OA125AP-11-3TB. I am more considering another fan 76CFM with 32dB(A) - type 11938MB-A1K-EA-00. Still not decided which one to buy.
Vladimir
Dne 18.02.2022 v 18:44 John kolb napsal(a):
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Show quoted text
Same problem with my HP5245. Love the large display. Do you have a CFM rating to look for?
John? KK6IL@...
On 2/18/2022 1:50 AM, Vladimir Filip wrote:
I am facing similar task to quiet by HP5345A counter, and that is very loud beast. Mouser has very wide selection of 115V fans where I am just now selecting proper one. In Europe you can also try TME.eu, they also have some 115V fans on stock.
Vladimir
Dne 18.02.2022 v 7:51 n8zmTWH@... napsal(a):
I don¡¯t have the 8970B schematic in front of me, but I¡¯d guess that if there is a 115VACfan, it is connect across half of the 230 VAC wired primary of the power transformer.
As for reducing the noise, I have on other HP boxes put a power resistor in series with the fan to reduce the supply voltage. I don¡¯t recall the value I used but the fan nameplate should tell you the current it draws at 115, and you can calculate a rough guess as to the resistor value and power rating. As the HP boxes are designed with the idea of being stuffed in a rack with other instruments also adding heat, and allowing for the air filter to be somewhat clogged with dust, half speed will still move plenty of air assuming you are not operating under those conditions. That should substantially reduce the noise, but the squeaking will probably require some sort of attention. Some light oil might be sufficient to determine if the bearings just are dry. Your decision on what to do at that point.
*From:*[email protected] <[email protected]> *On Behalf Of *Marc73
*Sent:* Friday, February 18, 2022 1:03 AM
*To:* [email protected]
*Subject:* [HP-Agilent-Keysight-equipment] HP 8970B noisy fan
I have an older HP 8970B which is however in good condition. Just one thing is annoying, the fan is very noisy and makes a loud squeaking noise. I guess the bearing has become bad.
As this fan is 115V (even though the insrument is used with 230V) it's not that easy to get such a fan replacement in Europe. Has anyone some advice how to get the fan quiet? Some oil at the right position? So far I did't tear down the fan as I don't want to berak it...
|
Re: Power meter E4416A problem power on
Another problem with these power meters (4418) : a single tiny dead line on the display. Any idea ?
On Friday, February 18, 2022, 07:15:40 PM GMT+1, Richard Parrish <richard@...> wrote:
The switch contacts are laminated into the front panel overlay.? Cheap to manufacture but the failure rate is high after 4-6years of constant service.? The part number is E4418-66502 Key Flexi Circuit ($302 from Keysight) and is used in the E4416, 17, 18, and E4419.? It might be cheaper to buy a defective power meter and scavenge it for the overlay.? You can search ebay for front panel overlay and you should find some for sale.? I've seen prices range from $30 to 125.00 on ebay and they're all selling the same item that is of course, Make in China. . . .? There are some listed now for $27, titled For Agilent/HP E4418A/B /E4416A/E4419A/B/E4417A Press Key Film membrane keypad
Richard
How is the Price of this keybad in eBay. Le ven. 18 f¨¦vr. 2022 ¨¤ 01:05, Mohamed Atif via <mohammedatif1968= [email protected]> a ¨¦crit?: Thanks for your reply. what problem with this keypad?? my power meter a month ago it works well I was on vacation when I came back I turn it on the orange button lights up but when I press the on button nothing happens.
Le jeu. 17 f¨¦vr. 2022 ¨¤ 22:38, Richard Parrish < Richard@...> a ¨¦crit?: You're going to have to replace the keypad assembly, this is a very common problem in all the new series of instruments and the E19xx series of meters. Price isn't too bad and you can find them for much less on Ebay. Richard
Hello, I have agilent E4416A series power meter. the voltages are ok 12v,-12v, 5v and the battery measures 2.9v the stand by light is on but when I press the power button nothing happens you can help me and thank you in advance. Best regards
|
Re: Power meter E4416A problem power on
There are on ebay now for as low as $21 and as high as $125.
I bought some a while back.? They work fine but instead of an
orange standby LED it has a red LED.
Tom Bryan
N3AJA
On 2/18/2022 1:15 PM, Richard Parrish
wrote:
toggle quoted message
Show quoted text
The switch contacts are laminated into the front panel overlay.?
Cheap to manufacture but the failure rate is high after 4-6years
of constant service.? The part number is E4418-66502 Key
Flexi Circuit ($302 from Keysight) and is used in the E4416,
17, 18, and E4419.? It might be cheaper to buy a defective
power meter and scavenge it for the overlay.? You can search
ebay for front panel overlay and you should find some for
sale.? I've seen prices range from $30 to 125.00 on ebay and
they're all selling the same item that is of course, Make in
China. . . .? There are some listed now for $27, titled For
Agilent/HP E4418A/B /E4416A/E4419A/B/E4417A Press Key Film
membrane keypad
Richard
How is the Price of this keybad in eBay.
Le ven. 18 f¨¦vr. 2022 ¨¤
01:05, Mohamed Atif via
<mohammedatif1968= [email protected]>
a ¨¦crit?:
Thanks for your reply.
what problem with this keypad?? my power
meter a month ago it works well I was on vacation when
I came back I turn it on the orange button lights up
but when I press the on button nothing happens.
Le jeu. 17 f¨¦vr.
2022 ¨¤ 22:38, Richard Parrish < Richard@...>
a ¨¦crit?:
You're going to have to replace the keypad
assembly, this is a very common problem in all the
new series of instruments and the E19xx series of
meters.
Price isn't too bad and you can find them for much
less on Ebay.
Richard
|
Re: Power meter E4416A problem power on
The switch contacts are laminated into the front panel overlay.? Cheap to manufacture but the failure rate is high after 4-6years of constant service.? The part number is E4418-66502 Key Flexi Circuit ($302 from Keysight) and is used in the E4416, 17,
18, and E4419.? It might be cheaper to buy a defective power meter and scavenge it for the overlay.? You can search ebay for front panel overlay and you should find some for sale.? I've seen prices range from $30 to 125.00 on ebay and they're all selling the
same item that is of course, Make in China. . . .? There are some listed now for $27, titled For Agilent/HP E4418A/B /E4416A/E4419A/B/E4417A Press Key Film membrane keypad
Richard
toggle quoted message
Show quoted text
How is the Price of this keybad in eBay.
Le ven. 18 f¨¦vr. 2022 ¨¤ 01:05, Mohamed Atif via
<mohammedatif1968= [email protected]> a ¨¦crit?:
Thanks for your reply.
what problem with this keypad?? my power meter a month ago it works well I was on vacation when I came back I turn it on the orange button lights up but when I press the on button nothing happens.
Le jeu. 17 f¨¦vr. 2022 ¨¤ 22:38, Richard Parrish < Richard@...> a ¨¦crit?:
You're going to have to replace the keypad assembly, this is a very common problem in all the new series of instruments and the E19xx series of meters.
Price isn't too bad and you can find them for much less on Ebay.
Richard
Hello,
I have agilent E4416A series power meter. the voltages are ok 12v,-12v, 5v and the battery measures 2.9v the stand by light is on but when I press the power button nothing happens you can help me and thank you in advance.
Best regards
|
Correct, mainly the whine is affected by slowing down even an otherwise OK fan, but I'll bet it would help some with the
bearing noise on an older fan as well.
Given that even a brand new fan in most of the HP gear of that vintage was unjustifiably annoying, slowing the fan was a big
improvement if the heat removal needs allowed.
toggle quoted message
Show quoted text
-----Original Message----- From: [email protected] < [email protected]> On Behalf Of Roy J. Tellason, Sr. Sent: Friday, February 18, 2022 12:27 PM To: [email protected]Subject: Re: [HP-Agilent-Keysight-equipment] HP 8970B noisy fan On Friday 18 February 2022 01:51:59 am n8zmTWH@... wrote: As for reducing the noise, I have on other HP boxes put a power resistor in series with the fan to reduce the supply voltage. That's not going to help with bearing noise caused by lack of proper lubrication... -- Member of the toughest, meanest, deadliest, most unrelenting -- and ablest -- form of life in this section of space, ?a critter that can be killed but can't be tamed. ?--Robert A. Heinlein, "The Puppet Masters" - Information is more dangerous than cannon to a society ruled by lies. --James M Dakin
|
Same problem with my HP5245. Love the large display. Do you have a CFM rating to look for?
John KK6IL@...
toggle quoted message
Show quoted text
On 2/18/2022 1:50 AM, Vladimir Filip wrote: I am facing similar task to quiet by HP5345A counter, and that is very loud beast. Mouser has very wide selection of 115V fans where I am just now selecting proper one. In Europe you can also try TME.eu, they also have some 115V fans on stock.
Vladimir
Dne 18.02.2022 v 7:51 n8zmTWH@... napsal(a):
I don¡¯t have the 8970B schematic in front of me, but I¡¯d guess that if there is a 115VACfan, it is connect across half of the 230 VAC wired primary of the power transformer.
As for reducing the noise, I have on other HP boxes put a power resistor in series with the fan to reduce the supply voltage. I don¡¯t recall the value I used but the fan nameplate should tell you the current it draws at 115, and you can calculate a rough guess as to the resistor value and power rating. As the HP boxes are designed with the idea of being stuffed in a rack with other instruments also adding heat, and allowing for the air filter to be somewhat clogged with dust, half speed will still move plenty of air assuming you are not operating under those conditions. That should substantially reduce the noise, but the squeaking will probably require some sort of attention. Some light oil might be sufficient to determine if the bearings just are dry. Your decision on what to do at that point.
*From:*[email protected] <[email protected]> *On Behalf Of *Marc73
*Sent:* Friday, February 18, 2022 1:03 AM
*To:* [email protected]
*Subject:* [HP-Agilent-Keysight-equipment] HP 8970B noisy fan
I have an older HP 8970B which is however in good condition. Just one thing is annoying, the fan is very noisy and makes a loud squeaking noise. I guess the bearing has become bad.
As this fan is 115V (even though the insrument is used with 230V) it's not that easy to get such a fan replacement in Europe. Has anyone some advice how to get the fan quiet? Some oil at the right position? So far I did't tear down the fan as I don't want to berak it...
|
Re: Convert monochrome 5454x scope to color
I've replaced my ccfls via the above parts, what a difference. Next question, I can't find any info on the inverter board. For some reason, HP doesn't seem to have provided any backlight intensity control or LCD contract control. I'm reasonably sure the inverter does have a brightness adjustment. Anyone have any info on either the inverter or what the 542C does for setting intensity and contrast?
|
On Friday 18 February 2022 01:51:59 am n8zmTWH@... wrote: As for reducing the noise, I have on other HP boxes put a power resistor in series with the fan to reduce the supply voltage. That's not going to help with bearing noise caused by lack of proper lubrication... -- Member of the toughest, meanest, deadliest, most unrelenting -- and ablest -- form of life in this section of space, ?a critter that can be killed but can't be tamed. ?--Robert A. Heinlein, "The Puppet Masters" - Information is more dangerous than cannon to a society ruled by lies. --James M Dakin
|
On Friday 18 February 2022 01:03:20 am Marc73 wrote: I have an older HP 8970B which is however in good condition. Just one thing is annoying, the fan is very noisy and makes a loud squeaking noise. I guess the bearing has become bad.
I have had good luck with that sort of thing by adding some lubricant to the fan bearings. Probably the lube that's in there now has degraded, with the lighter fractions evaporating so what's left has turned to bubble gum. In most cases, you can access the bearing by peeling back the paper label that's on one side. I've used sewing machine oil, but any light oil should work... -- Member of the toughest, meanest, deadliest, most unrelenting -- and ablest -- form of life in this section of space, ?a critter that can be killed but can't be tamed. ?--Robert A. Heinlein, "The Puppet Masters" - Information is more dangerous than cannon to a society ruled by lies. --James M Dakin
|
These fan's are quite noisy - at least 10dB higher than Noctua and other quiet fans
And being a 115v type they consume a great deal more power than modern 12 volt types
Same goes for the 230v types
|
Re: Power meter E4416A problem power on
The lowest price I see is $21.76 US.? Example
On 2/18/2022 6:45 AM, Mohamed Atif
wrote:
toggle quoted message
Show quoted text
It's very expensive in ebay
How is the Price of this keybad in eBay.
Le ven. 18 f¨¦vr. 2022 ¨¤
01:05, Mohamed Atif via
<mohammedatif1968= [email protected]>
a ¨¦crit?:
Thanks for your reply.
what problem with this keypad?? my power
meter a month ago it works well I was on vacation when
I came back I turn it on the orange button lights up
but when I press the on button nothing happens.
Le jeu. 17 f¨¦vr. 2022
¨¤ 22:38, Richard Parrish < Richard@...>
a ¨¦crit?:
You're
going to have to replace the keypad assembly, this
is a very common problem in all the new series of
instruments and the E19xx series of meters.
Price
isn't too bad and you can find them for much less
on Ebay.
Richard
|
 The fan has it's own tabs on the transformer. So replacing it with some other type (230V) might work
|
Farnell currently have suitable fans on offer at a pretty good price (about ?10)
I just bought 6 to use in my collection of 66xx system power supplies currently being slowly cleaned up and fixed.
Farnell part number 1545836
--
Michael Kellett,
MK Electronics Ltd.,
Unit 4,
Greenlaw,
Castle Douglas,
DG7 2LH,
01556 506999
07968 111148
www.mkesc.co.uk
|
It's in the basement of my house will never go beyond 21¡ãC / 70¡ãF. However I don't really know where the 115V are comming from inside the instument. Is there a transformer or power supply for it? The instrument can be powered with 110V to 240V. Does anyone have the schematic od the instrument?
|
Re: Power meter E4416A problem power on
It's very expensive in ebay
How is the Price of this keybad in eBay.
Le ven. 18 f¨¦vr. 2022 ¨¤ 01:05, Mohamed Atif via <mohammedatif1968= [email protected]> a ¨¦crit?: Thanks for your reply. what problem with this keypad?? my power meter a month ago it works well I was on vacation when I came back I turn it on the orange button lights up but when I press the on button nothing happens.
Le jeu. 17 f¨¦vr. 2022 ¨¤ 22:38, Richard Parrish < Richard@...> a ¨¦crit?:
You're going to have to replace the keypad assembly, this is a very common problem in all the new series of instruments and the E19xx series of meters.
Price isn't too bad and you can find them for much less on Ebay.
Richard
Hello,
I have agilent E4416A series power meter. the voltages are ok 12v,-12v, 5v and the battery measures 2.9v the stand by light is on but when I press the power button nothing happens you can help me and thank you in advance.
Best regards
|
Re: Power meter E4416A problem power on
How is the Price of this keybad in eBay.
Le ven. 18 f¨¦vr. 2022 ¨¤ 01:05, Mohamed Atif via <mohammedatif1968= [email protected]> a ¨¦crit?: Thanks for your reply. what problem with this keypad?? my power meter a month ago it works well I was on vacation when I came back I turn it on the orange button lights up but when I press the on button nothing happens.
Le jeu. 17 f¨¦vr. 2022 ¨¤ 22:38, Richard Parrish < Richard@...> a ¨¦crit?:
You're going to have to replace the keypad assembly, this is a very common problem in all the new series of instruments and the E19xx series of meters.
Price isn't too bad and you can find them for much less on Ebay.
Richard
Hello,
I have agilent E4416A series power meter. the voltages are ok 12v,-12v, 5v and the battery measures 2.9v the stand by light is on but when I press the power button nothing happens you can help me and thank you in advance.
Best regards
|
