Question about Audio Players & Recorders
I have a Pioneer Vsx-7500s the sound is working fine, but there is no signal displaying. You can hear it but it will not tell/signal if it's working or not.
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Posted on Jan 02, 2017
SOURCE: Pioneer VSX-804RDS
Its really7 a hard thing to say what the problem could be. It could be the stanby power supply. The power switch the power transformer. with out troubleshooting skills it in your best interest to seek a pro to troubleshoot this for you. You could cause alot more problems by touyching the wrong things if your not carefull. Good Luck
Posted on May 09, 2006
The amp sounds like it has a primary power supply failure and/or may be in protection mode. First, I would check for any blown fuses, replace any you fint with exactly the same type and rating. I can advise you here if you are not sure. If the unit blows a fuse after replace any failed ones, then there is a short circuit that you will have to trace out in the unit. DONT KEEP REPLACEING A BLOWING FUSE You generally are just doing more damage to the amp.
If all the fuses are OK and you are savvy with electronics and soldering, you could open it right inspect for these problems., and you have a multimeter, do some powersupply voltage checks, also check for that the main transformer is ok. Resolder any dry joints you find.
It may also (and or) have a problem in the output stages. Running it hard may have produced some dry solder joints, or blown a transistor in the output array. Happy to advise you further, just ask :)
Posted on Apr 21, 2008
This is a common problem with a few of the Pioneer of that era (VSX-3300, 3700, etc). A secundary power supply line is faulty and it prevents your display from working. It is not an easy DIY, but a local tech should be able to fix. It is not always the same exact cause, as there are a couple transistors, a zener diode and a cap that can fail.
You can continue to use it without any detrimental effects on the unit, and can guess the settings.
Posted on Aug 03, 2009
SOURCE: Pioneer vsx 511 amp error
There are two IC links on the main PCB (Printed Circuit Board) labelled IC604 w522 491010 and IC605 w522 491010 these should measure open circuit (damaged).
The PCB has a warning:
Caution: Replace IC links as marked manufactured by Littlefuse Inc
Finding replacement IC will solve the problem.
I do hope that my information is acceptable.
Posted on Apr 05, 2011
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