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WTD: Schematic SOLA 800A UPS (was NCR 4096-0800)

Discussion in 'Electronic Repair' started by G, Feb 5, 2006.

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  1. G

    G Guest

    Hello all,

    Looking for a schematic for this 800va UPS or to pick your brain if
    you have it at least. Previously I'd posted this want under it's
    rebadged identity as an NCR 4096-0800.

    Problem I'm experiencing is a hard failure to recognize AND switch relay
    K2 so as to revert back to mains supply. Both batteries are new
    (checked) and with the power switch on, run the inverter fine. AC mains
    failure is detected as evidenced by a recurring alert beep every 20 secs
    AND is recognized as valid by that not happening. The alarm relay
    switches to indicate valid inverter operation and, if I pull TP26 (K2
    ground side switching test point) to ground, relay K2 does switch,
    inverter shuts down, mains transfers to output and the batteries charge
    ok. Main problem I'm having trying to reverse engineer a solution is
    following the 2 sided pcb traces associated on this particular board so
    trying to cut a little closer to the chase ;)

    Any help or leads appreciated (already found the owners manual online
    and have a request in with SOLA for the word back).

  2. luke


    Sep 1, 2009
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