Is anyone parting out a Pioneer SD-P50xx series PTV?

[Leonard Caillouet]

The xx in your model number is the important part if you want parts that
will be of any use to you.

Leonard Caillouet

 

[James Sweet]

I have one of these that I've been working on for quite some time now and
recently got another which I was able to fix with some part swapping, but in
the process I found that all three sub-chassis's have various issues so I'm
hesitant to spend a bunch of money on parts with an uncertain outcome. Does
anyone have one of these with dead tubes and a serviceable chassis? Contact
me with price.

 

[Leonard Caillouet]

Those two would be mostly the same, as are the SD-P4575, SD-P4573, SD-P5575,
and PRO-97. Other models with the SD-P50xx prefix would not be as similar.

What kind of problems does your unit have?

Leonard Caillouet

 

[James Sweet]

It's a SD-P5073, but I just fixed an SD-P5075 and the relevant internals are
identical.

 

[James Sweet]

I "borrowed" the vertical deflection IC to fix the 5075, but I found a
source of that. When I got it the power supply was dead with several smoked
parts, I repaired it so it would turn on for a moment then shut off, but
then I forget what happened but it got so it wouldn't turn on at all again,
I checked with the known good power/sweep board and it turns on for a moment
then shuts off so I'm pretty certain there's a short somewhere on the main
chassis, I haven't really dug into it yet though. Before when I held the
power relay on it would display a slightly distorted raster but no pic and
no control response.

 

[Leonard Caillouet]

Look for bad solder joints everywhere. This is a very common problem on the
Pioneer sets. Also, are all of your low voltage supplies coming up?

Leonard Caillouet

 

[BillHeronemus]

I have a similar model in the shop that has had a intermittent short in the
blue CRT (even after being sent back twice to PATX for rebuilding) that has
killed the main ckt. board.
I hope to get back on it, although if I am able to bring it back to life, will
still have to deal with that arc that is visible in the gun of that tube which
may be un-repairable, so keep me in mind if anyone has a good used blue gun
that may be of use. Before the short, it had multiple bad solder connections
and a dead chassis, probably from the intermittent short.
Bill

 

[TV Fixer1]

I have a tube group (all three) from a parted out set; what is the number on
the tube you need. I'm in Chattanooga, Tn, but have plenty of tube boxes from
my days as a Philips factory servicer.

 

[James Sweet]

It had bad solder joints everywhere, I'm assuming that was the original
cause of failure, I think I repaired all those though. The
vertical/convergence board is now in good shape, still a problem with the
power supply and either the main chassis or the yokes, not sure. With a
known good PS/sweep board in there it turns on for a moment and shuts off.
Haven't had a chance to try swapping the main chassis yet, need to wait for
work to slow down a bit.