Sony STR-DE935 Won't Power On

[ferkee]

My neighbor figured there was no hope for his Sony STR-DE935 receiver
when it stopped powering on, so he gave it to me. I have done all I
think I can, but I still can't identify the problem and it's driving
me crazy. This is a great unit and I think it can be repaired.

Can somebody PLEASE shine some light?

Thanks in advance,
John

[gareth magennis]

"ferkee" > wrote in message
...
> My neighbor figured there was no hope for his Sony STR-DE935 receiver
> when it stopped powering on, so he gave it to me. I have done all I
> think I can, but I still can't identify the problem and it's driving
> me crazy. This is a great unit and I think it can be repaired.
>
> Can somebody PLEASE shine some light?
>
> Thanks in advance,
> John


Well not really unless you can shine more light on what you have done, found
out etc. Otherwise its a bit like saying my car won't start.



Gareth.

[ferkee]

Good point. Sorry...All *I* really have done is open the case and
visually inspect for problems, poor connections, etc. A friend of
mine at work took it home and tested it.

AC Power - OK
Power Switch - OK
DC Regulations
IC401 - IC1501
IC402 - IC1203
Q801 - IC1204
IC404 - IC1205
All OK

IC1207 on digital board - could not find schematic - no output.

Relay - OK
Fuses - OK

Suspect IC102

[ferkee]

Good point. Sorry...All *I* really have done is open the case and
visually inspect for problems, poor connections, etc. A friend of
mine at work took it home and tested it.

AC Power - OK
Power Switch - OK
DC Regulations
IC401 - IC1501
IC402 - IC1203
Q801 - IC1204
IC404 - IC1205
All OK

IC1207 on digital board - could not find schematic - no output.

Relay - OK
Fuses - OK

Suspect IC102

[Trevor Wilson[_2_]]

"ferkee" > wrote in message
...
> My neighbor figured there was no hope for his Sony STR-DE935 receiver
> when it stopped powering on, so he gave it to me. I have done all I
> think I can, but I still can't identify the problem and it's driving
> me crazy. This is a great unit and I think it can be repaired.
>
> Can somebody PLEASE shine some light?

**You'll need to buy a service manual. Most modern receivers use
microprocessors for protection and switch on functions. They also have a
diagnostics facility.


--
Trevor Wilson
www.rageaudio.com.au

[ferkee]

> **You'll need to buy a service manual. Most modern receivers use
> microprocessors for protection and switch on functions. They also have a
> diagnostics facility.
>
> --
> Trevor Wilsonwww.rageaudio.com.au

I do have a service manual. I may need help on diagnostics.