Re: DC 510/5010 Help [1 Attachment]
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----- Original Message -----
Sent: Wednesday, January 30, 2013 4:02
AM
Subject: Re: [TekScopes] DC 510/5010 Help
[1 Attachment]
?
I'll try it one more time
Dave
ArtekManuals.com
On
1/29/2013 10:54 PM, Tom Miller wrote:
?
It normally does allow attachments but it's not working now. I get a
404 error.
?
The yahoo script kiddies must be working late tonight.
?
?
----- Original Message -----
Sent: Tuesday, January 29, 2013 11:03
PM
Subject: Re: [TekScopes] DC 510/5010
Help [1 Attachment]
?
Paul
A whole raft of possible problems..error sheet
attached..you will get a copy via direct email? not sure if this
group "allows" attachment
Dave
ArtekManuals.com
On
1/29/2013 9:38 PM, paulkoby@... wrote:
?
My DC 5010 came up with a 320 error on start up. I looked in my pdf
operations manual and it say contact the service dept. I cannot at this
time find my service manual but I know I had one as I had problems with
the counter when I first aquired it. Any hints on where to start
looking
until my service manual shows up?
Thanks in
advance.
Paul KOby
KA5OBI
--
Dave Henderson
Manuals@...
PO Box 175
Welch,MN 55089
651-269-4265
--
Dave Henderson
Manuals@...
PO Box 175
Welch,MN 55089
651-269-4265
|
Re: pinout Tektronix 151-0178
Happy to help! Especially after all the help I've gotten from the knowledgeable folks here!
Mark
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On 01/30/2013 08:47 AM, g_kupka wrote:
Hi Mark, Hi David
Many thanks.
Gerhard
--- In TekScopes@..., "David C. Partridge" wrote:
Regards,
David Partridge
-----Original Message-----
From: TekScopes@... [mailto:TekScopes@...] On Behalf Of g_kupka
Sent: 30 January 2013 12:39
To: TekScopes@...
Subject: [TekScopes] pinout Tektronix 151-0178
I need the pinout for the dual transistor Tektronix p/n 151-0178.
Many thanks
Gerhard
|
Re: Tek 2235 power issue - A6RT901
Thank you all for providing those details so quickly. I will go home and double check the dimensions. I have added the pic to the photos section which highlights the defect.
The two Rifa 2200pF film caps were also badly cracked, but unfortunately my ESR70 meter does not measure at this rating. I have some replacement WIMA FKP1's to put in there.
My next step is to deal with the above and then check the 1amp rectifiers, unless there is anything else which is known cause for power issues on a 2235?
Thanks once again.
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--- In TekScopes@..., "Tom Miller" wrote:
This is a NTC surge resistor. It has a negative temperature coefficient, i.e. it is 10 ohms at 25 °C and drops as its temperature rises. This allows the capacitors to charge up when power is first turned on. It prevents the fuse from blowing. You are most likely reading 15 ohms because the ambient is less than 25 C.
Tom
----- Original Message -----
From: Tom Jobe
To: TekScopes@...
Sent: Tuesday, January 29, 2013 7:39 PM
Subject: Re: [TekScopes] Tek 2235 power issue - A6RT901
Hi Alex,
I have a good 2235 A6 board that has been removed from a scope, and RT901 measures 15 Ohms in circuit.
The component has no other markings (of use) other than "10 Ohm" (where Ohm is the Ohm symbol).
The A6 schematic shows it as a "10 ohm" part as well.
A look around the Mouser web site suggests that it might be called an "NTC thermistor".
Look at this link:
There are links to the datasheets for most of the thermistors, and I would guess that you could figure out the amperage backwards from the physical size of the RT901 you have.
There is about 20 mm of vertical room under the plastic cover for the thermistor, but there is room to lay it over a bit to get some extra space.
I would consider putting in the highest rated part there was the physical room for.
From reading some of the data sheets, it looks like the thermistors have a resistance around 3k to 4k when they are hot.
Perhaps one of the members will be able to add onto this story about thermistor characteristics.
Your local suppliers should be able to help you once you figure out what you want.
tom jobe...
----- Original Message -----
From: electric_quattro
To: TekScopes@...
Sent: Tuesday, January 29, 2013 2:31 PM
Subject: [TekScopes] Tek 2235 power issue - A6RT901
Hi everyone,
I have just acquired this scope which was sold as not powering on. Once opened up I spotted that RT901 which sits on board A6 had a hole in it. I also measured it at 15ohms out of circuit.
According to the service manual this is a 100ohm thermal resistor, 10%, NTC. However, I am having problems finding a replacement in the UK. Is this part known under a different name?
I've taken a photo which I will add to the site.
Any help greatly appreciated.
Thanks
Alex
|
Re: pinout Tektronix 151-0178
Hi Mark, Hi David
Many thanks.
Gerhard
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--- In TekScopes@..., "David C. Partridge" wrote:
Regards,
David Partridge
-----Original Message-----
From: TekScopes@... [mailto:TekScopes@...] On Behalf Of g_kupka
Sent: 30 January 2013 12:39
To: TekScopes@...
Subject: [TekScopes] pinout Tektronix 151-0178
I need the pinout for the dual transistor Tektronix p/n 151-0178.
Many thanks
Gerhard
------------------------------------
Yahoo! Groups Links
|
Re: pinout Tektronix 151-0178
<>
Regards,
David Partridge
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-----Original Message-----
From: TekScopes@... [mailto:TekScopes@...] On Behalf Of g_kupka
Sent: 30 January 2013 12:39
To: TekScopes@...
Subject: [TekScopes] pinout Tektronix 151-0178
I need the pinout for the dual transistor Tektronix p/n 151-0178.
Many thanks
Gerhard
------------------------------------
Yahoo! Groups Links
|
Re: pinout Tektronix 151-0178
On 01/30/2013 07:39 AM, g_kupka wrote: I need the pinout for the dual transistor Tektronix p/n 151-0178.
Many thanks
Gerhard Gerhard, It's a TO-78. Looking at the bottom, with the tab at around 11 0'clock, it's C, B, E, E, B, C. Do you have a copy of the Tek crossreference? It shows all the transistor configurations. Mark
|
pinout Tektronix 151-0178
I need the pinout for the dual transistor Tektronix p/n 151-0178.
Many thanks
Gerhard
|
Yeah I see that ..you want a copy of the error page? ..drop me a private request
As for Yahoo..well Swift had it right in Gulliver's travels when he referred to the ....."Yahoos are primitive creatures obsessed with "pretty stones" they find by digging in mud"...and ....." as being filthy and with unpleasant habits, resembling human beings far too closely"
Cheers
Dave
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On 1/30/2013 4:32 AM, Mark Wendt wrote: Dave,
yahoo still seems to be broke.
Mark
On 01/30/2013 04:02 AM, Artekmedia wrote:
[Attachment(s)<#TopText> from Artekmedia included below]
I'll try it one more time
Dave
ArtekManuals.com
On 1/29/2013 10:54 PM, Tom Miller wrote:
It normally does allow attachments but it's not working now. I get a
404 error.
The yahoo script kiddies must be working late tonight.
----- Original Message -----
*From:* Artekmedia<mailto:manuals@...>
*To:* TekScopes@...
<mailto:TekScopes@...> ; paulkoby@...
<mailto:paulkoby@...>
*Sent:* Tuesday, January 29, 2013 11:03 PM
*Subject:* Re: [TekScopes] DC 510/5010 Help [1 Attachment]
Paul
A whole raft of possible problems..error sheet attached..you will
get a copy via direct email not sure if this group "allows"
attachment
Dave
ArtekManuals.com
On 1/29/2013 9:38 PM, paulkoby@... wrote:
My DC 5010 came up with a 320 error on start up. I looked in my
pdf operations manual and it say contact the service dept. I
cannot at this time find my service manual but I know I had one
as I had problems with the counter when I first aquired it. Any
hints on where to start looking
until my service manual shows up?
Thanks in advance.
Paul KOby
KA5OBI
--
Dave Henderson
Manuals@...
www.Artekmanuals.com
PO Box 175
Welch,MN 55089
651-269-4265
--
Dave Henderson
Manuals@...
www.Artekmanuals.com
PO Box 175
Welch,MN 55089
651-269-4265
Attachment(s) from Artekmedia
1 of 1 File(s)
DC5010 Integrity Errors.pdf
<>
------------------------------------
Yahoo! Groups Links
--
Dave Henderson
Manuals@...
www.Artekmanuals.com
PO Box 175
Welch,MN 55089
651-269-4265
|
Re: Tek scopes for sale at Orlando HamCation Feb 7,8,9
Hi Bob,? Could you list your scopes as I am interested but not able to travel to Orlando? Thanks.
On Wednesday, January 30, 2013, Bob W5UQ 2 wrote:
?
I will be there Thursday afternoon,
Friday and Saturday until early afternoon.? (Feb. 7, 8 and 9)
Look for my four tables in the swap building next to restrooms.?
My? equipment is guaranteed to work.? I have checked calibration
on it all and repaired whatever was necessary.
I'll have some Tektronix scopes and other scopes and HP signal
generators (8640A and B)
Look for my big Yellow Sign with on it.?
Near the center of building.
Bob Hardie
W5UQ
--
...
|
Re: DC 510/5010 Help [1 Attachment]
Dave,
yahoo still seems to be broke.
Mark
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On 01/30/2013 04:02 AM, Artekmedia wrote: [Attachment(s) <#TopText> from Artekmedia included below]
I'll try it one more time
Dave
ArtekManuals.com
On 1/29/2013 10:54 PM, Tom Miller wrote:
It normally does allow attachments but it's not working now. I get a 404 error.
The yahoo script kiddies must be working late tonight.
----- Original Message -----
*From:* Artekmedia <mailto:manuals@...>
*To:* TekScopes@...
<mailto:TekScopes@...> ; paulkoby@...
<mailto:paulkoby@...>
*Sent:* Tuesday, January 29, 2013 11:03 PM
*Subject:* Re: [TekScopes] DC 510/5010 Help [1 Attachment]
Paul
A whole raft of possible problems..error sheet attached..you will
get a copy via direct email not sure if this group "allows"
attachment
Dave
ArtekManuals.com
On 1/29/2013 9:38 PM, paulkoby@... wrote:
My DC 5010 came up with a 320 error on start up. I looked in my
pdf operations manual and it say contact the service dept. I
cannot at this time find my service manual but I know I had one
as I had problems with the counter when I first aquired it. Any
hints on where to start looking
until my service manual shows up?
Thanks in advance.
Paul KOby
KA5OBI
--
Dave Henderson
Manuals@...
www.Artekmanuals.com
PO Box 175
Welch,MN 55089
651-269-4265
--
Dave Henderson
Manuals@...
www.Artekmanuals.com
PO Box 175
Welch,MN 55089
651-269-4265
Attachment(s) from Artekmedia
1 of 1 File(s)
DC5010 Integrity Errors.pdf <>
|
Re: Service Maual for TM502 frame
On 01/29/2013 05:51 PM, Dennis Tillman wrote:
As you probably discovered by now, there was no TM502. There was only a TM502A.
All of the TM5xx mainframes are virtually identical in the most important respect – how power is provided to the plugins. They all use a classic transformer power supply. So if you have schematics for one TM5xx power supply almost everything will be similar in you TM502 except for the location of the parts and some parts values.
The TM5003 and TM5006 used switching power supplies to save weight so they are significantly different! .
And the TM5006 keeps my plugins running cooler! ;-) Mark
|
I'll try it one more time
Dave
ArtekManuals.com
On 1/29/2013 10:54 PM, Tom Miller wrote:
?
It normally does allow attachments but it's not working
now. I get a 404 error.
?
The yahoo script kiddies must be working late tonight.
?
?
----- Original Message
-----
Sent: Tuesday,
January 29, 2013 11:03 PM
Subject: Re:
[TekScopes] DC 510/5010 Help [1 Attachment]
?
Paul
A whole raft of possible problems..error sheet
attached..you will get a copy via direct email? not
sure if this group "allows" attachment
Dave
ArtekManuals.com
On 1/29/2013 9:38 PM, paulkoby@...
wrote:
?
My DC 5010 came up with a 320 error on start up.
I looked in my pdf operations manual and it say
contact the service dept. I cannot at this time
find my service manual but I know I had one as I
had problems with the counter when I first aquired
it. Any hints on where to start looking
until my service manual shows up?
Thanks in advance.
Paul KOby
KA5OBI
--
Dave Henderson
Manuals@...
PO Box 175
Welch,MN 55089
651-269-4265
--
Dave Henderson
Manuals@...
PO Box 175
Welch,MN 55089
651-269-4265
|
hey have a look http://bit.ly/X5QI0n
G |
|
Re: 2465B SMT cap replacement
The 2465B?S/N >050000?A5 board has four SMT electrolytics that
are known to leak and cause damage to the SMT caps and resistors. If you select
"messages" and do a search for "2456B A5" it should bring up everything about
the problem. At least an hour of reading :).
?
?
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----- Original Message -----
Sent: Wednesday, January 30, 2013 12:02
AM
Subject: [TekScopes] 2465B SMT cap
replacement
?
I'm pretty sure this repair has been covered to death, but can someone tell
me how to find the descriptions? I have not been able to get into the archives
for some reason. Is that where this is covered?
|
Is it acceptable to adjust the gain settings on a 2235 using an accurate DC signal or must one use an oscillating signal of some sort? The calibration status of my function generator is unknown but I have an accurate and finely adjustable DC supply. The adjustments seem to work well according to the procedure but when I check the deflection with various settings of the V/div switches and various input voltages using the same DC supply the results are not within spec for all switch positions.
|
I downloaded the Tektronix 7B51 manual and found that schematic page 6, the power supply, is missing and it appears to have just the information I need. It is on 11" X 17" format. If anyone has that page and can send me a copy I would appreciate it.
Reed Dickinson
reed714@...
|
I'm looking at used 465 and 475 scopes. Apparently the 465's with serial numbers 250,000 and up are more desirable. Why is that? I've also read that the "later" serial number 475's are better. Later than what, and why? And does that apply to the 475A's as well? Should the lower serial number scopes be avoided? Thanks.
|
2465B SMT cap replacement
I'm pretty sure this repair has been covered to death, but can someone tell me how to find the descriptions? I have not been able to get into the archives for some reason. Is that where this is covered?
|
Re: DC 510/5010 Help [1 Attachment]
It normally does allow attachments but it's not working now. I get a 404
error.
?
The yahoo script kiddies must be working late tonight.
?
?
toggle quoted message
Show quoted text
----- Original Message -----
Sent: Tuesday, January 29, 2013 11:03
PM
Subject: Re: [TekScopes] DC 510/5010 Help
[1 Attachment]
?
Paul
A whole raft of possible problems..error sheet attached..you
will get a copy via direct email? not sure if this group "allows"
attachment
Dave
ArtekManuals.com
On 1/29/2013 9:38 PM, paulkoby@... wrote:
?
My DC 5010 came up with a 320 error on start up. I looked in my pdf
operations manual and it say contact the service dept. I cannot at this time
find my service manual but I know I had one as I had problems with the
counter when I first aquired it. Any hints on where to start
looking
until my service manual shows up?
Thanks in advance.
Paul
KOby
KA5OBI
--
Dave Henderson
Manuals@...
PO Box 175
Welch,MN 55089
651-269-4265
|
Paul
A whole raft of possible problems..error sheet attached..you will
get a copy via direct email? not sure if this group "allows"
attachment
Dave
ArtekManuals.com
On 1/29/2013 9:38 PM, paulkoby@... wrote:
?
My DC 5010 came up with a 320 error on start up. I looked
in my pdf operations manual and it say contact the service
dept. I cannot at this time find my service manual but I
know I had one as I had problems with the counter when I
first aquired it. Any hints on where to start looking
until my service manual shows up?
Thanks in advance.
Paul KOby
KA5OBI
--
Dave Henderson
Manuals@...
PO Box 175
Welch,MN 55089
651-269-4265
|
David C. Partridge