Hey Group:
Got this ProJo in the shop that was supposed to have taken some kind of
surge. Totally D.O.A.. Been through the P/S (Replaced Reg's. and
caps.). Gone through
the Deflection Module. Replaced several parts that checked OK (Like the
H.O.T.,
etc.). Appear that I now have all the Stand By voltages, but unit still
won't power
up. Removed the Flyback and rang it - seems to check OK, however I know
that's
no guarantee. Since I don't have Schem. on this unit I was hoping that
perhaps some
one may know something about this 1993-1995 unit that I'm overlooking,
or, hopefully there is someone out there that knows "Mit's" enough to
make some
suggestions.
T.I.A.
Jim

"Jim" bravely wrote to "All" (11 Oct 05 17:44:22)
--- on the heady topic of "Mitsubishi VS-4003R ProJo Dead Set Issue"

Ji From: Jim
Ji Xref: core-easynews sci.electronics.repair:344802

Ji Hey Group:
Ji Got this ProJo in the shop that was supposed to have taken some kind
Ji of surge. Totally D.O.A.. Been through the P/S (Replaced Reg's. and
Ji caps.). Gone through
Ji the Deflection Module. Replaced several parts that checked OK (Like
Ji the H.O.T.,
Ji etc.). Appear that I now have all the Stand By voltages, but unit
Ji still won't power
Ji up. Removed the Flyback and rang it - seems to check OK, however I
Ji know that's
Ji no guarantee. Since I don't have Schem. on this unit I was hoping that
Ji perhaps some
Ji one may know something about this 1993-1995 unit that I'm overlooking,
Ji or, hopefully there is someone out there that knows "Mit's" enough to
Ji make some
Ji suggestions.
Ji T.I.A.
Ji Jim


Could be a dead transistor switch or cpu line for the turn-on circuit.
Is there any sign of activity at that cpu line? Cpu brain dead?

A*s*i*m*o*v

.... First Church of Binary Science (The Digitarians)