Ok, so I have a pioneer surround sound that I was trying to fix because of one speaker had very low volume. What I changed was a resistor, its the exact same color stripes, but the size is a bit bigger. When tested, the surround sound detected an error and went into protected mode. Until I forced reset it the 2 bridge rectifiers sounded like they exploded and there was leakage. The part number is D5SBA60 silicon bridge rectifier. I was reading online about the cause of it faling and there was 2 reasons. If the fuse did not blow, then I have an open. And if it did blow, then I have a shorted rectifier. The fuse did not open, so does that mean I still have an open in my circuit? What would I have to inspect before replacing the bridge rectifiers? The only thing I could think of is maybe a bad solder joint or could it have been a bad capacitor that leads to that speaker that caused this reaction?

Here is what I changed in blue circle, but the bridge rectifier is not near here. enter image description here

Here is what I have found, I looked at pin 28 on IC501 (input volume selector) and it looked a bit black and I cleaned with alcohol and this appeared suspicious to me

enter image description here

So now the question is: Is the IC 501 the problem or before it or is resoldering pin for clean connection the solution? This is the most obvious problem I found so could this have been the cause? I checked on the schematics on page 86: enter image description here

And here is what is going to INSBL2: enter image description here

Schematics manual: http://www.mediafire.com/file/438o6iwkvfjlacy/Pioneer-VSX-1017TXV-K-Service-Manual.pdf/file I forced reset after putting bridge rectifiers and using correct resistor and it turned on, but no volume on speakers. Faulty IC501 (input volume selector)? The reason why the Pioneer system turned on and did not shut down is because I had some sound card loose, the first one I seated correctly was CN501, I turned it on and turned on a few seconds and turned off into protected mode.

Update: I do not have continuity from IC781 pin 1 to C789 positive side, but do have continuity to R797. Is this bad? Here I tested bridge rectifiers, are these good readings? https://youtu.be/GLbh0ko8Fzo enter image description here

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    \$\begingroup\$ Sorry, I tried to keep question as simple as possible. \$\endgroup\$ – Alejandro H Dec 8 '18 at 22:24
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    \$\begingroup\$ "Blow up" is imprecise. Was there an explosion? \$\endgroup\$ – Transistor Dec 8 '18 at 22:47
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    \$\begingroup\$ The bridge rectifiers sounded like it exploded and smoked came out and the bridge rectifiers were leaking. \$\endgroup\$ – Alejandro H Dec 8 '18 at 22:49
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    \$\begingroup\$ Op involve specific troubleshooting steps and demonstrate a good understanding of the underlying design of the device being repaired. The close reason is NOT a synonym for "if you don't know how to fix it, don't ask." Voting to reopen. \$\endgroup\$ – Passerby Dec 8 '18 at 23:50
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    \$\begingroup\$ Schematic! Much better. \$\endgroup\$ – winny Dec 9 '18 at 7:48

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