Re: CBM 710: Replacing Power Supply - Help Needed

From: Michał Pleban <lists_at_michau.name>
Date: Sat, 14 Apr 2018 19:12:25 +0200
Message-ID: <5AD23679.6020401@michau.name>
Hello!

Mia Magnusson wrote:

> Or you could repair the broken PSU. Unless a TDA1060 / NE 5560 or some
> replacement for the BUV48A/BUV47A power transistor is hard to get,
> there aren't any parts that's likely to be break and hard to get a hold
> of.

I replaced the PSU with one from another 710 today but after a few hours
of work, it died too. This is starting to be really annoying. Maybe the
PSU doesn't like my setup (710 + 8088 card + internal floppy) which
generates too much load for it?

Anyway, both PSUs died in the same way, and now exhibit the same
behaviour. When I turn it on, there is power for about 1/2 of second (I
can see the LEDs of the floppy drive going on for this time, then going
of), then the power goes out. What could cause something like this? I am
unfortunately completely clueless with regard to switching PSUs.

Regards,
Michau.
Received on 2018-04-14 20:00:02

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