Re: JVC DR MV1B , DVD/VCR recorder


N Cook wrote:
Not my usual area but willing to at least look at it despite inglorious
reputation googling about.
Owner was prepared to live with having to press on/off ten times from cold
before it would settle into on/standby but now there is a sound problem.
After 2 days powered up all audio functions gradually fail to white noise,
ie play anything , record anything VCR or DVD or off-air.
I've located 2 SIL, LA.... (closely surrounded in tiny lytics so cannot
read) in area of board marked Audio In/Out , any suggestions. ?
I get the impression it was on left and right so trace power line back to ps
and selectively heat to induce problem.?

You've probably done it I imagine, but change all the capacitors in
the power supply secondary- these units tend to have abysmal
ventilation and hence run hot. This gives rise to all kinds of weird
problems such as the on-off trouble you mentioned. from there, after
elimination you can delve into the trickier area of the audio circuit.
-B.

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