10 May
1999
10 May
'99
6:19 a.m.
Dave Dameron <ddameron(a)earthlink.net> wrote:
Hi All
I was there and yes, the fuse didn't blow yet? When Eric
first came in, he was complaining of too high of a output voltage.
I should have recognized this symptom right off the bat.
This is a definite indication that the primary is failing
some place. When you have shorted turns, it increases the
turns ratio, causing higher output voltage ( his first
symptom). I doubt it is a rectifier short, these usually
smoke quite a bit when they fail because the current is
concentrated in one place. Nothing else was particularly
hot.
Eric, you might try seeing if these guys have a transformer
laying around:
http://www.imsai.net/
Dwight
It's
probably easier to rewind the transformer than replace it with
SMPSUs.
Yes.
What are the dimensions of the core? The longest dimension (length
usually), and the thickness. The height should be 5/6 of the length.
Hopefully the laminations are not welded together like microwave oven
transformers. If the voltages checked out without a load, look for a very
good short somewhere.
The 5 Amp line fuse didn't blow?
-Dave