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Old 05-01-2020, 06:24 AM   #1
Bobfurai
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Default Pioneer VSX 930 - MCACC led - wireless led blinking

Hello from France

First, please forgive me for my English. I used to speak English quite well at school but I think I loosed a lot of my skills.

I hope I will find some help to repair my 3 and a half years old VSX 930.

First, it suddenly shut off with "AMP ERR" message and MCACC PRO red led blinking.
After doing some search on Internet, I disassemble AMP board an tested for shorten transistor but no luck because eveything seems good. So I tested every transistor and diode but still no shorten component.

I reassemble the amp board in the receiver but the problem was still present.

I tried to start the receiver without the amp board connected and I basically get an overload errror.

When I reassemble all AMP BOARD connectors, a very little electrical arc occured and now when I start the amp, I have the wireless led blinking and sometime I can see AMP ERR.

I think the wireless led blinking is the real problem but I'm not sure.

I have download the service manual but I think I nedd some help to find the real problem.

I have a multimetre, soldering iron (and good skills using it). I have repair home heater, washing machine but this time, it's a bit harder !

Please, help me if you can so I can enjoy my movies again.
Attached Images
File Type: jpg IMG_20200501_134917.jpg (485.4 KB, 13 views)
File Type: jpg IMG_20200501_141339.jpg (707.7 KB, 13 views)
File Type: jpg IMG_20200501_141353.jpg (437.7 KB, 12 views)
Attached Files
File Type: pdf RRV4611 - VSX-1130-K, VSX-930-K, VSX-930-S.pdf (673.3 KB, 5 views)
File Type: pdf pioneer_vsx-1130-k_vsx-90_av_receiver_rrv4596_2015_sm.pdf (13.78 MB, 5 views)
File Type: pdf pioneer_vsx-1130-k_vsx-90_vsa-1130_rrv4597.pdf (12.11 MB, 5 views)
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Old 05-01-2020, 03:13 PM   #2
CapLeaker
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Default Re: Pioneer VSX 930 - MCACC led - wireless led blinking

to me an amp err occurs, when there is DC on one of the output channels. Check each channel again.
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Old 05-02-2020, 02:10 AM   #3
Bobfurai
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Default Re: Pioneer VSX 930 - MCACC led - wireless led blinking

Quote:
Originally Posted by CapLeaker View Post
to me an amp err occurs, when there is DC on one of the output channels. Check each channel again.
OK, I'll test again the amp board.

The strange thing is that AMP ERR normally comes withe MCACC led flashing and in my case, I have now Wireless led flashing
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