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  • April 22, 2020 at 5:49 pm in reply to: Questions about vintage Memory Man Solid State Echo Chorus repair w/pics #126018
    SurfGreenTele
    Member

    I’m happy to say, all is good with the new power supply!

    April 20, 2020 at 6:31 pm in reply to: Questions about vintage Memory Man Solid State Echo Chorus repair w/pics #126012
    SurfGreenTele
    Member
    Quote:
    They certainly can and do go bad but thankfully be replaced quite easily with more ‘modern’ regulators.

    There’s a lot more that could be wrong before jumping to that though, could also be nothing wrong apart from the bad wall supply.

    In the mean time if you want something productive to do, you could test all the electrolytic & tantalum capacitors for shorts with the continuity setting of your multimeter (assuming it has one).

    Thanks, I will do that!

    April 20, 2020 at 2:32 pm in reply to: Questions about vintage Memory Man Solid State Echo Chorus repair w/pics #126010
    SurfGreenTele
    Member
    Quote:
    No sound doesn’t necessarily mean a power supply problem, no, but as you tested your supply and had no voltage you’ve answered one question yourself :) this unit does require power for bypass.

    AC doesn’t have a polarity, but DC does, but hopefully the rectifier diodes will have provided some polarity protection.

    Thanks a lot for the input. Someone on The Gear Page suggested to check the regulator (NE5554N) next, if the new power supply doesn’t solve it.

    April 18, 2020 at 2:11 pm in reply to: Questions about vintage Memory Man Solid State Echo Chorus repair w/pics #126004
    SurfGreenTele
    Member

    Also…I did a dumb thing yesterday – at first not realizing it took AC, I had hooked it up to a regular 24V DC power supply and got some odd faint squealing noises but still no guitar signal going through. I hope I didn’t kill anything. I know the other way is more dangerous (using AC on a DC pedal), but argh. :(

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