Sony 35s40 power supply

[asic_ace]

Years ago the horizontal drive transistor shorted (tomb-stoned against the heat sink) and took out the power supply. I was lucky to find a post somewhere that listed every part that was likely blown and it was dead-on. I think I need it again but can't find it.
Now,
I was looking for a cold solder joint (although I once found a hairline crack in a pcb trace) with a heat gun. The issue was sound present but no picture. Initially, turning off & on several times would get the picture back. Then it evolved into smacking in just the right place. A heat gun on the right side (from the rear) of board "A" (& board G) would get it working. I'd read that cold solder joints on the vertical amp (IC561) could cause this. I should have stopped there.
For no good reason other than it had the RGB amps, I heated board C. Well, the grounded tip of the heat gun hit something and, after a respectable arc, the sound died.
So, now the blinking light still blinks. And, what I think is the "stereo light" still lights when I cycle through inputs, so I'm hoping the jungle chip is ok. There are no voltages on the few I've checked; 200v is gone.
I bought 3 of each part replaced way back then and have found a few schematics & parts list from the previous repair. I need to find the parts. The parts I can come up with are: C515, C516, R607, R513, Q502; I think there's more. I wish I'd kept the original post.
The TV is on a 5 foot high shelf in a built-in bar so I can't really get a scope to it. It weighs 183 pounds so not easy to move. And my wife says that if it ever comes off that shelf, it's gone. We're rural with 3 M-BITS/s DSL. I cannot convince her that we cannot stream.
Any help in saving this TV is appreciated.

[asic_ace]

So, I found that the "G" board (power supply) could be removed with the power cord attached. I put it on a bench and only needed a meter. R607 was open (blown) & both transistors (NPN) in IC601 were shorted. After replacing both I soldered a jumper between "Standby 5V" & "Relay" and all the voltages were good. So I'm back where I started with sound & intermittent video. Heating board "A" no longer brings the video back so I'll remove it (many connectors) and touch up all the solder joints and look for cracked traces around the vertical drive (IC561); shooting in the dark. I could really use a scope here but board "A" cannot be removed and the TV weighs 183 pounds and is in a cabinet 5 ft. high with just enough room to rotate it; it's not coming down.

The only thing I would have wanted a scope for would be to measure the frequency that the IC601 transistors oscillate at. Sony used this design to allow using smaller transformers. The higher the frequency, the less iron you need.

I'm posting this for reference: KV-35s40 (and similar) blown power supply, first try replacing R607 (0.1 ohm fusible resistor) and IC601 (a pair of NPN transistors with a bizarre pinout). R607 looks like it doesn't really protect anything aside from melted traces (a good thing) or possibly the rectifier bridge preceding it (a better thing). The transistors in IC601 shorting (bipolar always shorts) is the primary cause.

Using a meter, if R607 doesn't read zero ohms, it's bad. If either transistor in IC601 read very low ohms (collector to emitter) it's bad. Usually both are bad.

I've found that the service manual is easily available for download from several sources; do a search.

This TV is obsolete; I hope someone, some day finds this useful.

[zeno]

Cold joints under the vert out IC was the common problem for no vid.
Also same in almost all brands. In other words check on ALL sets along
with the Hoz drive transformer. Those put may steaks on the barbie.

73 Zeno
LFOD !