Sony RPTV KP-46V15, powers on, but no picture or sound............

There is no way to know without proper troubleshooting and diagnosing inside the set. The tv has multiple protect circuits that will shut the set down if there is any problem detected.

If the picture still looked good the last time you used the set, you should at least have it properly diagnosed and get an estimate for repair. Especially if you can haul it into a Sony experienced servicer (save the in home trip charges, up to $100). Typical repair in 90% of cases is less than $250 if you take it in, some less than $150. You cannot replace it for that kind of money.

thx for taking the time......i guess that's one way to look at it, i suppose what was leaning me to the 'dump' side was that if i repair it, it is essntially at it's design life and i'm still putting money into a 10+ year old set that may fail again....however, i guess it could continue running too. I did have a couple covergence ic's replaced a few year ago so this would be the 2nd repair..

..the picture did look quite good still before this behavior.....except for an intermittent 'faint flashing' of 'faint white' (very hard to describe) & happened very intermittently ...(i wonder if the two are related?)....hauling it off to repair center won't work i'd have to eat the srvice call chg......hmmm......btw, would there be any indication of a fault in service menu?...or is there a way to do some sort of 'reset' that could 'rearm' some sort of protection circuit that went off?

Thx again.

it

indication

'reset'

Art, yeah the user menu comes up as well, it bounces a li'l bit like the input label.......the red light blinks i think 5 times when i power it up ....i think this is what it always did, maybe i'm wrong......

Thx Billy, yeah it might be worth checking out, thx for the tip.

I had a sinilar problem couple of year sgo fixed it for the cost of the IC STRS6301 chip $7 and my time doing that. that is all I had to change If your Sony has that chip that MAY be all that is needed to change .. as it was in my case.. do some more research there is tonns of info on the net regarting IC STRS6301 in a Sony ..good luck

Apparently it is extremely common for the power converter IC STRS6301 to die. It's the same on my 20EXR20 - mine's blown twice since 1991! My Dad's

27EXR20 has blown once. If you are a gambler that this is the only problem, try replacing this IC. I paid about $10 for one from Newark or MCM. The STRS6301A seems to work as the current replacement, said to be more robust. ECG 7046 or NTE7046. I was advised to try adding a bigger heatsink to the present heatsink to aid cooling, which I did. We shall see! Servicers tend to charge about $150 for this repair. View this article only Newsgroups: sci.electronics.repair Date: 2001-02-14 23:20:05 PST

Bill: Follow the suggestions on the reply post from Jerry G. ........ he is absolutely correct in his diagnosis and repair suggestions. Forget the schematic, you may not need it for this repair........If the power supply IC is a STRS6301/A, replace it. Also check all the electrolytics on the power supply board with an ESR meter.........no ESR meter??...then replace them all.....if any of the electrolytics are bad you can blow the new IC in short order. This is a very common and frequent failure mode in this power supply design. Before firing up the television be sure to check the HOT and surrounding flyback circuitry for high ESR electrolytics, shorted diodes and other semiconductors, open low ohm resistors, and check the solder connections on all of the heat producing components like power resistors, diodes, power transistors and chips, etc.

-- Best Regards, Dan Sofie Electronics Supply & Repair