A client has an RCA D52W19B with the ITC222 chassis.

Previous repairs have involved patching a cold solder joint on CL031,
which had endured horrendous amounts of arcing since CL031 is a high
voltage capacitor (.0087 microfarads at 1600 VDC). Capacitor was not
replaced.

CP150 (2200 microfarads at 16 VDC) was replaced as the capacitor was
visibly defective with bulging of the can (stupid Chinese/Taiwanese
capacitor manufacturers; the capacitor in question was made by Lelon,
which is one of many also responsible for faulty computer motherboard
capacitors).

Currently, the set has a tendency to shut down and not power up when
being used after being off overnight. The power LED comes on for a
few seconds, then goes off, and then repeats a couple of more times
before not doing anything at all. After a few moments, the set is
able to be powered up again, only to shut down again after a little
while longer at running. Then, after another few moments, the set
powers on and seems to stay on.

I suspect the replacement I used for CP150 could be bad.

I am also thinking that CL031 might have sustained damage from heat
associated with the arcing and should have been replaced, except I
cannot find any place that sells this part, including online sources
such as DigiKey.

Client doesn't want to buy a new TV. She bought this one because of
the RCA name, not knowing that it largely stopped meaning anything
after the late 1980's.

Any solutions?

And, which seems typical with quite a few Thomson-designed RCA chassis
I've seen, this thing sucks in terms of its layout and parts quality.