Question about Onkyo M-501 Amplifier

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Whats the problem of my onkyo m-501 it has no power

How can i fix that problem of my onkyo m-501 power amplifier

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Unplugged with nO power cord connected,,after checking for any internal blown fuses, inspect circuit board for burnt resistors or blown caps, the resistors will appear to be laying on there sides and have multi colored bands around them look for burnt or discolored ones, blown capacitors will look like tiny barrels with lids a flat top indicates a good capacitor as any humped or bulged or rounded top would indicate blown cap , if not more than a couple you may be able to replace these with success, be careful always Unplug from power before servicing electronic componants.

Posted on May 17, 2014

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Hi inside some amplifer`s they have little glass fuses which sometimes blow and causes the amp not to work.....if there is fuses inside make sure you replace them with the correct be able to get the glass fuses from maplins or a electrical shop.....

Posted on May 17, 2014

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1 Answer

How can I fix my amplifier?

Swap input cables to the left side to verify both sides are clean. The power module for the right channel is probably toast. Or the protection relay for the right channel is very resistive.
The power module does not exist on the internet.
Go to Ebay, find a 100% seller, buy a M-501 for a good price, use your M-501 for spare parts.

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EITHER blown caps or burnt internal fuses, look around on the circuit board for capacitors with rounded or humped ends, find and check internal fuses and test them

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