AIWA AV-D77U AV RECIEVER

[rtanderson]

I have one I am trying to fix, the unit just clicks on then off... no
front flourecescent display. All the fuses that I find are good, no
shorted outputs that I can find.

any suggestions from anyone that may have seen this before would be
greatly appreciated....

thanks for your time

thomasa@prattav.com

 

[Mark D. Zacharias]

Try looking for a DC offset on any of the amp channels. Look to see if the
output of each of the voltage regulators comes up before it shuts down. Look
for the -30v line for the display - it could be your culprit.
Sometimes it helps to connect a double - male AC cord to the switched
outlet. MUST be the same polarity as the main power cord, which shouldn't be
a problem. This may help troubleshoot other voltages regardless of shutdown
issues.
It's likely you'll need a service manual before all this is through. Too bad
because Aiwa's manuals are difficult to read / follow.


Mark Z.

--
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"rtanderson" <richard.t.anderson@us.army.mil> wrote in message
news:383999ee.0405131356.2afd0802@posting.google.com...

I have one I am trying to fix, the unit just clicks on then off... no
front flourecescent display. All the fuses that I find are good, no
shorted outputs that I can find.

any suggestions from anyone that may have seen this before would be
greatly appreciated....

thanks for your time

thomasa@prattav.com