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| | |-+  Multicade Boards - 48 in 1, 60 in 1, Etc.
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Author Topic: Multicade Boards - 48 in 1, 60 in 1, Etc.  (Read 6957 times)
arkanoid
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« on: September 09, 2009, 08:11:32 PM »

    Symptom: No video.  Red LED flashes when powered.
    Diagnosis: EPROM not making good contact
    Repair: Remove/reseat 27C4096

    Symptom: No audio.  (User applied -5V on 12V line?)
    Diagnosis: C47 (470uf, 16v) bad, audio amp bad
    Repair: Replaced C47, replaced TDA2003
« Last Edit: September 09, 2009, 11:50:32 PM by channelmaniac » Logged
channelmaniac
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« Reply #1 on: September 09, 2009, 11:51:56 PM »

Thanks for logging that!

The EPROM holds run time code for the FPGA chip on the board. All the games are kept on a surface mount flash chip under the plastic cover.

RJ
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« Reply #2 on: September 09, 2009, 11:59:57 PM »

Welcome to NLG arkanoid wave and K+ for logging a repair tip as your first post!  applause
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