1050 Repairs

[Linda Naysmith]

Can anyone give advice on how to repair a 1050 disk drive. When powered up
the power LED lights up at the front but there is no life in the drive
mechanism. Any ideas?

L..

[CBClarke]

Check to see if the belt is broken.

"Linda Naysmith" <linda.n...@blueyonder.co.uk> wrote in message
news:9eVX7.2481$aR3.2...@news1.cableinet.net...

[Rick Cortese]

"Linda Naysmith" <linda.n...@blueyonder.co.uk> wrote in message
news:9eVX7.2481$aR3.2...@news1.cableinet.net...

> Can anyone give advice on how to repair a 1050 disk drive. When powered up
> the power LED lights up at the front but there is no life in the drive
> mechanism. Any ideas?

Few more tests have to be done.

Try booting the computer with the drive powered up and the drive powered
off. If it makes the same noise in both cases, then it is probably a
RIOT/PIA type chip, 6532 IIRC.

If it makes a different noise in each case, it is probably the 12V power
supply. The 12V supply can be confirmed to be out by inserting disks in a
powered up drive. The activity light should go on when the door latch is
closed.

You may be able to just resolder the diodes on the back of the board between
the large capacitors. They break loose from thermal cycling.

[Linda Naysmith]

The belt is OK.

L..

CBClarke <cabell.cl...@SPAMNOverizon.net> wrote in message
news:mC0Y7.2913$TM3....@nwrddc02.gnilink.net...

[Ron Hamilton]

And sometimes, one fails requiring replacement. Check resistance across
individual diodes in both directions with a VOM. They should be high one way
and low the opposite and all 4 about the same. I replaced my odd one with an
IN 5400 from Radio Shack # 276-1141 and it is still ginning 18 months so
far.

--
-Ron

Experience is something you don't get until just after you need it.
http://www.atariland.com/members/oldatarian

"Rick Cortese" <rico...@netmagic.net> wrote in message
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