18 Apr
2023
18 Apr
'23
2:24 p.m.
I’ve found that following traces and identifying components that connect to either side of
the failed resistor is usually a good start for finding root cause.
Shorted power transistors, diodes, or portions of bridge rectifiers have been the root
cause of cascading failures in my cases.
-Royce
On Apr 18, 2023, at 06:51, Tom Hunter via cctalk
<cctalk(a)classiccmp.org> wrote:
The blown out resistor likely has "blown out" for a reason.
The replacement will probably suffer the same faith unless you find the
root cause.
> On Tue, Apr 18, 2023 at 12:20 AM John Robertson via cctalk <
> cctalk(a)classiccmp.org> wrote:
>
> I've checked bitsavers.org (Al does a great job!), and a number of
> forums, but no luck finding schematics for my ADM31 that I am trying to
> resurrect. The power supply has issues and I need to identify a blown
> out resistor - the switching supply is a Boschert model 1001 date code
> 7943 Revision J.
>
> John :-#)#
>
> --
> John's Jukes Ltd.
> 7 - 3979 Marine Way, Burnaby, BC, Canada V5J 5E3
> Call (604)872-5757 (Pinballs, Jukes, Video Games)
> flippers.com
> "Old pinballers never die, they just flip out"
>
>