I have searched without success so far, Can anyone help?
Sony Amp (1970s)
Sony Amp (1970s)
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Re: Sony SA-88 Schematics Wanted
that should be so simple you don't even need schematics.
also you can take advantage of fact that those are 2 same circuits for 2 channels.
if one channel works ok then it can help you troubleshoot other.
other than that you're left with power supply...and pots... -
Re: Sony SA-88 Schematics Wanted
It is something so simple that I felt embarassed to ask. It is the value of the lamp for the stereo signal which is missing as I removed it many years ago for an ID but now is lost.
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Re: Sony SA-88 Schematics Wanted
turn it on,tune to a stereo signal,measure voltage.
iirc the mpx chip can only source about 30 ma to drive the lamp.
might be a job for an led?Comment
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Re: Sony SA-88 Schematics Wanted
Sorry, It was a ST-88 a tuner. (I used to have an amp)Comment
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Re: Sony SA-88 Schematics Wanted
kc's answer still very much valid.
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Re: Sony SA-88 Schematics Wanted
The stereo output for the indicator light is 15V when full signal. I found a led from a portable tv. I have had no luck finding two 8V x .15w dial light bulbs.Comment
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Re: Sony SA-88 Schematics Wanted
uses 2 lights?
try 2 led's in series and a 470 ohm resistor.Comment
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Re: Sony SA-88 Schematics Wanted
I found the bulbs here http://www.lampspecs.co.uk/Light-Bul...150MA-1-2W-E10Comment
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Hi, lastweek i received a Sony SVE151E11M, that after a liquid damage was not starting, after removing oxide and reworking IC and SMD component thet laptop was able to start and was working for 2 DAYS...
after the 2nd day, the screen become black (no backlight), there is HDD activity (OS is loading) but no screen on internal panel, VGA and HDMI.
After 25/38 seconds the computer shut down by itself. (i know that is probably not the cause of the blackscreen but a thermal protection of some kind.. but i'm interested on how the shutdown is performed)
BTW... 2 ICs related to thermal... -
Hello, good people. Hope you are all doing fine.
As the title says, I have a question about this Sony Dream Machine clock radio model ICF-C12W from the 80s. I,ve recently come into possession of it, but it is intended for 110-120V input, not 220-240V power rating which is used where I live.
I have this idea of replacing its inner transformer with the one that operates on 220-240V mains. I have opened the housing, there are no ratings on the current transformer. On its output side there are three wires coming out and going to the PCB. One is black, the other two are red. I... -
Hello!
Anyone have the schematics for SVP13?
Previous technician broke the webcam connector and 3 traces from there are missing.
(exact model is SVP1322V2EB )
Thank you in advance!01-20-2022, 02:51 AM -
I am currently on a troubleshoot of 46” Sony KDL-46BX450 tv. I came back from Washington to Texas on medical emergency and had to leave all my tools up there. All I have is a couple of screwdrivers and a dvm. I wish to ask the community a troubleshooting question. Please forgive stupid questions as meds I am taking produce brain fog.
I have well maintained Sony KDL-46BX450. It went black one day. After turn-on, I get solid green light and Sony logo in screen center for about 1-2 seconds, then black. No blinking LEDs, no hissing. Flashlight test shows screen characters dimly viewable,... -
The number on this board is 602-20G* with no manufacturer name. Any info will be appreciated.11-26-2022, 02:55 PM
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