Arfa Daily wrote:
wrote in message
...
Sony STR-V444ES speakers audio isnt kicking in.
Good audio to the Headphones is fine.
Scoped audio up to relays is fine.
but still 27 Volts across relay coil. No signal to drop one side low
and thus kick in the relay.
WHY ??? ayone run into this before?

Yes i have looked for DC, and there isnt any.
Also there are 4 different relays, Front-Rear L&R None of them are
kicking in.


The fact that none of the relays is dropping in, is neither here nor
there - except to indicate that the problem is likely *not* related
to any particular relay driver. To avoid unncessary duplication, the
fault monitoring and switch on delay circuitry, will be a single
entity, monitoring all channels simultaneously, and acting on all
relay drivers simultaneously. Thus, any fault ( DC offset, over
current, over temp etc ) detected on *any* channel, will cause *all*
relay drivers to be inhibited. So, I would suggest that your problem
lies either with the fault monitoring circuitry itself, or the fact
that it is genuinely detecting a problem on one or more channels.

Arfa

I think I've seen a couple bad 1 ohm resistors in the power supply cause
this. They're at the rear corner of the machine.

Mark Z.