help identifying this part?

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Hello everyone,

Im a complete novice but have put my hands to a couple diy projects and have repaired some old synths. I recently bought an old M&M electronics mixing desk and have some problems with power. its should be giving 15v +- but is giving +14 -5. There is a cracked component on the power regulator. well I think? I took it to RS Components and none of the staff could help me. If anyone could take the time to help[ me out i would be very grateful.

It the sweet looking thing

An externally hosted image should be here but it was not working when we last tested it.
Joined 2007
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Try attaching the image directly :)

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is it a capacitor?


  • Power regulator.jpg
    Power regulator.jpg
    76.7 KB · Views: 80
Joined 2007
Paid Member
Any film type will be OK. Always nice to get one that fits the PCB if possible.

Have you removed it and measured it for leakage. I'm not saying its not faulty :) but I suspect that either its OK and the fault is elsewhere or if it really is faulty then it will have caused other damage along the way. It takes a lot of energy to burn a faulty cap, more than a small transistor regulator can give.
if memory serves me if that cap in the supply was blown i'd check all the faders no dis to these MM mixers but they did have one fatal flaw they varied gain by putting the fader to the inverting input of the opamp driving the mix buss which, if the faders go open (either from dirt or wear or broken connection) results in channel volume going to "11" which with open mic's usually turns into screaming feed back killing ears and horns and amps not to mention the opamp and supply.
so be wary and check the faders well!
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