Re: IC-7000 no rx and no sound out from speaker
Good work James. Did you see anything on the display like a reaction on the S meter. Won't be surprised if not as some of the clocking inputs to the codec chip come from the clocking I/O pins of the ADSP chip along with the chip select for the codec IC551.
Well you've proven the audio path from AOUT +/-, now to get a digital codec signal out of SDTO and back into SDTI.
Geoff
On Sun, Nov 10, 2024 at 9:05?AM James Tiberius via <nono2212000= [email protected]> wrote: Hi All
Confirmed the audio circuit from IC551 to speaker is ok by injecting 1khz tone at various points after IC551.
Now waiting for the replacement ic551 to arrive.
will keep you updated
?
?
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Re: IC-7000 no rx and no sound out from speaker
Just out of interest i would like to compare settings just in case mine are too far out. If anyone can compare with their settings that would be much appreciated
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Re: IC-7000 no rx and no sound out from speaker
Hi All
Confirmed the audio circuit from IC551 to speaker is ok by injecting 1khz tone at various points after IC551.
Now waiting for the replacement ic551 to arrive.
will keep you updated
?
?
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Re: [IC-7000] Re: Front panel troubleshooting
?
This just posted on IC-7000 no rx and no sound out from speaker topic.
?
"I think this Topic has got crossed over somehow [IC-7000] Re: Front panel troubleshooting which happened around Nov 4. There are a number of replies that have not appeared here but on the Front Panel troubleshooting? one.
?
Best we continue? on IC-7000 no rx and no sound out from speaker from Jame's original posting of Oct 30."
?
Sorry to those of this topic for the mistake.
?
Geoff
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Re: IC-7000 no rx and no sound out from speaker
I think this Topic has got crossed over somehow to [IC-7000] Re: Front panel troubleshooting which happened around Nov 4. There are a number of replies that have not appeared here but on the Front Panel troubleshooting? one.
?
Best we continue? on IC-7000 no rx and no sound out from speaker from Jame's original posting of Oct 30.
?
Geoff
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Re: [IC-7000] Re: Front panel troubleshooting
Hi Geoff
Good idea. At least it will verify output circuits.
Will let you know how it goes .
James?
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Re: [IC-7000] Re: Front panel troubleshooting
James can you capacitively feed an audio signal, no greater than say 3Vpp, onto the pins 25/26 and see if you can hear/see any reaction. Monitor the signal at these pins with a CRO to see if its loaded down at all.
Also, pay some close attention to all the ribbon cables that run from the Logic board to the Main board. Look for proper seating and damaged tracks on these cables. Its quite possible someone before you has had a go at this radio.
Geoff
Bob, I hear you. :-)
On Wed, Nov 6, 2024 at 7:39?AM James Tiberius via <nono2212000= [email protected]> wrote: Hi all
I checked ic551 pins 10 - 14 and only pin 10 has the 24mhz clock, 11-14 are 0v no activity at all- even from a power off to on state.
I ordered a replacement IC from China - will take a week or so to arrive.
I will replace the chip and let you know how it goes
?
James
VK2VJZ
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Re: [IC-7000] Re: Front panel troubleshooting
Geoff
Ditto: educational not annoying
Kurt KD6LZV
toggle quoted message
Show quoted text
On Nov 5, 2024, at 12:39 PM, James Tiberius via groups.io <nono2212000@...> wrote:
? Hi all
I checked ic551 pins 10 - 14 and only pin 10 has the 24mhz clock, 11-14 are 0v no activity at all- even from a power off to on state.
I ordered a replacement IC from China - will take a week or so to arrive.
I will replace the chip and let you know how it goes
?
James
VK2VJZ
|
Re: [IC-7000] Re: Front panel troubleshooting
Hi all
I checked ic551 pins 10 - 14 and only pin 10 has the 24mhz clock, 11-14 are 0v no activity at all- even from a power off to on state.
I ordered a replacement IC from China - will take a week or so to arrive.
I will replace the chip and let you know how it goes
?
James
VK2VJZ
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Re: [IC-7000] Re: Front panel troubleshooting
Geoff, These posts on troubleshooting are interesting, not annoying. They're good reading. Bob W4JFA
James,
The datasheet for IC551 is on the internet and maybe worth a look.
You say you have the analogue signal at IC551 is it pin 4. Can you see anything at R611, R615, or the filter device IC601 pin 5.
Do you see a digital signal from IC551 pin 13? Do you have a logic analyser you could use?
Maybe we can continue off Group to save annoying others. My callsign + gmail.
Cheers
Geoff
On Mon, Nov 4, 2024 at 8:35?AM James Tiberius via <nono2212000= [email protected]> wrote: Thanks PaulYes that's expensive. Looking for a parts radio now Regards? James? On Mon, Nov 4, 2024 at 8:34 AM, Paul Hansen
Logic units have been a
relatively high failure item. Icom never even attempted to repair them except
for the CI-V components. The latest price list I have from Icom does list the
part as being available. It’s US$353.29. Ouch!
?
Thank You
?
Paul W. Hansen, W6XA
Amateur Radio Service
2134 Carthage Road
Tucker, GA 30084
(864) 222-3539
?
?
Hi Paul
Yes just wanted to reach out to see if you have any
experience with the logic board on the 7000
My 7000 could have the fault?
James?
?
On
Sun, Nov 3, 2024 at 10:13 PM, Paul Hansen
Is
this for me?
?
Thank
You
?
Paul
W. Hansen, W6XA
Amateur
Radio Service
2134
Carthage Road
Tucker,
GA 30084
(864)
222-3539
?
?
I have a 7000 with no audio on rx and will not
tx.
I think its the logic board
are these boards available?
|
I recently bought an IC-7000.? During my very first QSO (on QRP 70cm CW) my QSO partner (Chris GU3TUX) noticed frequency jumps at the start of each of my transmissions.? He kindly informed me, and I found the article by Daniel SM6VFZ via a Google search.
I also heard the frequency jumps when listening to GU3TUX after a TX-to-RX transition (when I went from TX to RX).
?
I inserted a small piece of 10 mm thick medium density foam to fill the gap between the TCXO and the rear heat sink, and which filled the small gap between the side of the fan and the edge of the PCB.? ? No adhesive was needed: only the gentle pressure as the PCB was screwed back into position.? Initial tests in the shack indicate a complete resolution of the drifting/jumping issue.? I am very pleased? :-)
Thank you, Daniel SM6VFZ!
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Re: [IC-7000] Re: Front panel troubleshooting
Hi Geoff
Nothing out of IC551 pins 25 and 26 which feed IC601 , ic601 is underneath so very hard to get to but checked on ic551 pins 25 and 26 and nothing at all with a good clean signal on pin 4. i haven't checked pin 13 on 551 yet but will try and get to it by the end of the week. Also thinking about ordering another chip to replace ic551 - they are relatively cheap and worth a shot. If it doesn't fix the problem then the issue lies somewhere else
James
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Re: [IC-7000] Re: Front panel troubleshooting
James,
The datasheet for IC551 is on the internet and maybe worth a look.
You say you have the analogue signal at IC551 is it pin 4. Can you see anything at R611, R615, or the filter device IC601 pin 5.
Do you see a digital signal from IC551 pin 13? Do you have a logic analyser you could use?
Maybe we can continue off Group to save annoying others. My callsign + gmail.
Cheers
Geoff
On Mon, Nov 4, 2024 at 8:35?AM James Tiberius via <nono2212000= [email protected]> wrote: Thanks PaulYes that's expensive. Looking for a parts radio now Regards? James? On Mon, Nov 4, 2024 at 8:34 AM, Paul Hansen
Logic units have been a
relatively high failure item. Icom never even attempted to repair them except
for the CI-V components. The latest price list I have from Icom does list the
part as being available. It’s US$353.29. Ouch!
?
Thank You
?
Paul W. Hansen, W6XA
Amateur Radio Service
2134 Carthage Road
Tucker, GA 30084
(864) 222-3539
?
?
Hi Paul
Yes just wanted to reach out to see if you have any
experience with the logic board on the 7000
My 7000 could have the fault?
James?
?
On
Sun, Nov 3, 2024 at 10:13 PM, Paul Hansen
Is
this for me?
?
Thank
You
?
Paul
W. Hansen, W6XA
Amateur
Radio Service
2134
Carthage Road
Tucker,
GA 30084
(864)
222-3539
?
?
I have a 7000 with no audio on rx and will not
tx.
I think its the logic board
are these boards available?
|
Re: [IC-7000] Re: Front panel troubleshooting
Thanks Paul Yes that's expensive. Looking for a parts radio now Regards?
On Mon, Nov 4, 2024 at 8:34 AM, Paul Hansen <pwhansen@...> wrote:
Logic units have been a
relatively high failure item. Icom never even attempted to repair them except
for the CI-V components. The latest price list I have from Icom does list the
part as being available. It’s US$353.29. Ouch!
?
Thank You
?
Paul W. Hansen, W6XA
Amateur Radio Service
2134 Carthage Road
Tucker, GA 30084
(864) 222-3539
www.amateurradioservice.com
?
?
Hi Paul
Yes just wanted to reach out to see if you have any
experience with the logic board on the 7000
My 7000 could have the fault?
James?
?
On
Sun, Nov 3, 2024 at 10:13 PM, Paul Hansen
Is
this for me?
?
Thank
You
?
Paul
W. Hansen, W6XA
Amateur
Radio Service
2134
Carthage Road
Tucker,
GA 30084
(864)
222-3539
www.amateurradioservice.com
?
?
I have a 7000 with no audio on rx and will not
tx.
I think its the logic board
are these boards available?
|
Re: [IC-7000] Re: Front panel troubleshooting
Logic units have been a
relatively high failure item. Icom never even attempted to repair them except
for the CI-V components. The latest price list I have from Icom does list the
part as being available. It’s US$353.29. Ouch!
?
Thank You
?
Paul W. Hansen, W6XA
Amateur Radio Service
2134 Carthage Road
Tucker, GA 30084
(864) 222-3539
www.amateurradioservice.com
?
toggle quoted message
Show quoted text
From: [email protected]
[mailto:[email protected]] On Behalf Of James Tiberius via groups.io
Sent: Sunday, November 3, 2024 20:48
To: [email protected]
Subject: Re: [ic7000] [IC-7000] Re: Front panel troubleshooting
?
Hi Paul
Yes just wanted to reach out to see if you have any
experience with the logic board on the 7000
My 7000 could have the fault?
James?
?
On
Sun, Nov 3, 2024 at 10:13 PM, Paul Hansen
Is
this for me?
?
Thank
You
?
Paul
W. Hansen, W6XA
Amateur
Radio Service
2134
Carthage Road
Tucker,
GA 30084
(864)
222-3539
www.amateurradioservice.com
?
?
I have a 7000 with no audio on rx and will not
tx.
I think its the logic board
are these boards available?
|
Re: [IC-7000] Re: Front panel troubleshooting
Hi Paul Yes just wanted to reach out to see if you have any experience with the logic board on the 7000 My 7000 could have the fault? Regards
On Sun, Nov 3, 2024 at 10:13 PM, Paul Hansen <pwhansen@...> wrote:
Is this for me?
?
Thank You
?
Paul W. Hansen, W6XA
Amateur Radio Service
2134 Carthage Road
Tucker, GA 30084
(864) 222-3539
www.amateurradioservice.com
?
?
I have a 7000 with no audio on rx and will not tx.
I think its the logic board
are these boards available?
|
Re: IC-7000 no rx and no sound out from speaker
Hi Tommy
Not sure, the audio in and out of this IC also go through the DSP.
The fact that no audio passes through this chip Rx or tx either means a complete failure of ic551 or the DSP has some issue which is going to be hard to find given the board is only accessible on one side.
I could try to obtain ic551 and replace it but I think if I can get a spare board it might be an easier option
James?
Vk2vjz
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Re: IC-7000 no rx and no sound out from speaker
James Did you conclude IC551 is bad? Tommy KF4RWG
On Sun, Nov 3, 2024 at 3:54?AM James Tiberius via <nono2212000= [email protected]> wrote: looks like the logic board is faulty.
looking for a replacement now
TBC
|
Re: [IC-7000] Re: Front panel troubleshooting
Is this for me?
?
Thank You
?
Paul W. Hansen, W6XA
Amateur Radio Service
2134 Carthage Road
Tucker, GA 30084
(864) 222-3539
www.amateurradioservice.com
?
toggle quoted message
Show quoted text
From: [email protected]
[mailto:[email protected]] On Behalf Of James Tiberius via groups.io
Sent: Sunday, November 3, 2024 08:53
To: [email protected]
Subject: Re: [ic7000] [IC-7000] Re: Front panel troubleshooting
?
I have a 7000 with no audio on rx and will not tx.
I think its the logic board
are these boards available?
|
Re: IC-7000 no rx and no sound out from speaker
looks like the logic board is faulty.
looking for a replacement now
TBC
|
Bob
Steve G4ALG