68kMLA Classic Interface

This is a version of the 68kMLA forums for viewing on your favorite old mac. Visitors on modern platforms may prefer the main site.

Click here to select a new forum.
IIsi PSU repair
Posted by: bibilit on 2013-01-02 08:15:57
A couple of weeks ago i tested my new (to me) Quicktake, using the IIsi for that purpose.

After 15 minutes, the IIsi turned itself off, with a loud bang and smoke coming from the PSU. 🙁

I waited for one minute, hit the switch again...and the IIsi came to life with no trouble.

I used the units for a pair of hours and all was OK.

Obviously, something was wrong anyway, and as i only have one PSU for my two units, i decided today to brake the PSU open.

pict0147.jpg

One of the caps has gone bad, and i was able to find one locally:

pict0149.jpg

Removing the old unit and getting the new one was just a couple of minutes.

pict0148.jpg

Back to service again.pict0150.jpg

pict0151.jpg
Posted by: uniserver on 2013-01-02 09:00:22
you said that you only have one PSU for 2 machines?

maybe the same issue is wrong with the other psu?

Wonder if this cap is a common failure point.
Posted by: bibilit on 2013-01-02 09:20:33
you said that you only have one PSU for 2 machines?
Yes, the second one was sent to Zuiko21 (a member of 68k) in the first place i should have kept only one IIsi, but the second one was kept incomplete as a guinea pig.
Posted by: Trash80toHP_Mini on 2013-01-02 09:25:27
😎 😉

Nice troubleshooting and repair as well. 😀

1