Geoffrey S. Mendelson wrote:
James Sweet wrote:
wrote in message
ups.com...
i baught an old APPLE - MAC PLUS computer . i pluged it to 230 v ac .
nothing happened .
so i opened the cover . i saw the fuse inside it had burst . so i
changed a onw 5 amp fuse . and i powdered it ON . i saw spark of fire
in POWDER/SWEEP board . and again the new fuse had burst . i think
some component had burst too. so please give me an idea to repaire
it . OR give me the circuit ,so that i can verify it...

Are you sure it was a 230 volt model? If it had been imported from the U.S.
it was 120 volt only.

Look for Larry Pina's book "Macintosh Upgrade and Repair Secrets".

Where are you, I can lend you the tools and books, but I expect you are
not nearyby.

Geoff.


Many years since I used to fix these.

But some ideas, BP cap on the video,LM??? chip in the video, GI??? diode
in the video, Mis-jumped 120v, dead EHT ,(the little ones would blow,
and were replaced by a physically larger unit that was also used in the
SE which lasted.These faults were so common that you could buy kits of
parts to fix them for the 128k,512k,plus and SE, of which I am sure I
still have a few.

regards Andrew