13 Feb
2014
13 Feb
'14
12:52 p.m.
On 02/13/2014 03:43 AM, Simon Claessen wrote:
On 12-02-14 23:18, Tony Duell wrote:
I can say one thing for sure it was not a mosfet. Power mosfets had not
become
the vogue at the time that was built.
Allison
In whuich case it's almost certainl the right
sort of part. My
experience suggests that SMPSUs fail for may more trivial reasons than
having a MOSFET fitted in palce ofr a bipolar transistor.
The mosfet runs hot, even with the original cooling, and the paper is
not advancing, so there must be something wrong somewere else in the
machine. I actually would love to find out what type of transistor was
there originally relabeled as digital part # 151278200