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  • February 11, 2009 at 7:58 pm in reply to: Older EH Memory Man Not Working – Any Ideas? #93114
    megachunk
    Member

    Alas I have no scope or injection amp.

    I did swap out the switch and nothing doin’. Actually, no click thump now unlike the other switch- that one had definite thump through the amp.

    I’ll go through the works soon – Have to put it down for a while and get back to it later. I truly appreciate the info you gave me.

    MikeG

    February 11, 2009 at 7:25 pm in reply to: Older EH Memory Man Not Working – Any Ideas? #93107
    megachunk
    Member

    Thanks, found it.

    Put a low noise op amp in and didn’t really do anything. Not getting any output or signal through, with the switch in either position. I also have a few compensated op amps I could put in. I may go and replace them all.

    Thanks again.

    MikeG.

    February 11, 2009 at 5:49 pm in reply to: Older EH Memory Man Not Working – Any Ideas? #93094
    megachunk
    Member

    Ron.

    I’ve replaced the bridge rectifier as well, but which op amp is the first in the chain? Below the top pot or bottom pot? The one closest to the power caps I’m assuming.

    Thanks again.

    Mike G.

    February 11, 2009 at 3:08 pm in reply to: Older EH Memory Man Not Working – Any Ideas? #93083
    megachunk
    Member

    Thanks a whole bunch, Ron.

    Power supply’s fine, getting about 17+/- replaced the larger electrlytics. Gonna do the op amp today, but not sure how to do the voltage reg thing if I’m having to. Any particular value for those regs? Or would you by chance have a diagram of this mod?

    Sorry for all the beggin’. You’ve been an immense help already.

    Thanks again
    MikeG
    Megachunk

    PS: I work at Lace Sensor – If there’s any pickups you’d like to try out, give me a holler over there.

    February 11, 2009 at 1:41 am in reply to: Older EH Memory Man Not Working – Any Ideas? #93058
    megachunk
    Member

    It’s the black graphics with blue writing and the ECHO/CHORUS switch.

    Thanks for the reply!

    Mega

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