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JVC JA-S44 no audio output

JVC JA-S44 good a/c and d/c voltages. VU meters light but no signal. No audio output. Fuses good. Suggestions welcome.

Comments
2020, December 18 - 14:03
#456397
hifista
hifista picture
15 years 1 week

Hi!
The most likely possibility of an error is a short circuit in the speaker output,and the DC protection prohibits the operation.
In this case, you can measuring in L301-R339 ( the another channel L302-R340) around + or – 40V, the  IC 301 or 302 (STK0050) are damaged.
Hifista.
 

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2020, December 18 - 13:43
#456388
attila.p
attila.p picture
7 years 8 months

Try it :

https://elektrotanya.com/jvc_ja-s44_sch.pdf/download.html

best regards
attila.p

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