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studebaker hawk studebaker hawk is offline
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Well I found out why I didn't have any sound or picture after I replaced the flyback, I had a bad connection on a wire. Stupid me! But anyway, I installed the new flyback and nothing has changed, same old flashing of picture accompanied with the static noise at the same time. So here's the scoop so far, the picture tube is ok (I removed the yoke and of course no picture but still have the noise) as is the flyback. Between flashes, actually I should say that I've probably incorrectly described what I call a flash, actually it appears there's a voltage drop whereupon the picture is lost, then regained. The picture and sound appears normal between the voltage drops. There's no visible arcing or signs of overheated components. The only component that gets hot is a 4,000 ohm resistor in the high voltage section, but it's a big one that's probably carrying quite a bit of juice. I cooled it down with freon (yep, still have some R12 auto freon left!) and nothing changed.

One fellow I talked to today mentioned something about a horizontal driver transformer. Does this make any sense to you folks? If so, I'd appreciate more details such as what does it look like, testing and so on. And and all suggestions or suspicions as to th epossible problem are greatly appreciated.

Thanks!


Quote:
Originally Posted by Mike
yea you lost your B+ to the vertical IC or the vertical IC is bad,. but you
should have sound.

im wondering if the secondaries of the FBT aint the same.



"studebaker hawk" wrote in message
...

David Naylor Wrote:
Homer J Simpson wrote:-
"David Naylor"
wrote in message
. ..

-
sounds like the ever famous Sanyo flyback interal leak in the focus
block
section-


Is it the focus block or the flyback?


-
Yeh the focus block is part of the fly back part is about 14 dollars



Well folks, I'm back.... I ordered a new flyback, got it yesterday,
installed it last night and no more snaps or flashes, in fact, I have
no picture or sound at all!!! If I turn the screen knob all the way up
I can get a horizontal line across the screen and with the focus knob I
can make it fat and blurry or narrow and sharp for all the good that
does. I can hear the set click on when turned on, the filiments in the
neck of the tube will get orange although I don't believe at bright as
before, I can feel some static electricity on the outside of the tube,
but no illumination whatsoever and no sound at all through the audio
regardless of whether I have a signal or not.

After I got the old flyback removed, I cleaned the excess solder out of
the holes in the circuit board so I could place the new one, soldered
the connections on the back and replaced all the wires from where they
came from (I drew a diagram beforehand). Anyone have any ideas? My
solder joints all look good. I figured I'd better steer clear of the
Sanyo flybacks so to be on the safe side, I got an ACME brand with a
one year warranty from an outfit in Flordia. You folks think it's my
screwup or the new flyback??? I don't claim to be an Einstein, but
replacing it was pretty much a no brainer. Thanks.




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studebaker hawk