Sony Blink Codes - tv?

[Dave Jennings]

Hi everyone,

This morning my 5 year old Sony KV-28DX20U TV started playing up. The power light goes on, sound comes out but no picture. After a minute or so, a green tint appears over the screen and then the picture comes in, but with a green tint.

I believe the Sony's have a self-diagnostic feature, but can't find much about this.

The red power light comes on and blinks 5 times, then goes off for about 3 seconds, then blinks 5 times, etc.

Hopefully it's something relatively simple, as it's a great TV and I've never had any problems with Sony before. Anyone able to help / offer some clues on this?

Thanks!

[Colin Wilson]

Its a long shot, but...

a combination of searches like "5 flash" and "blink" to find some possibly relevant codes / module failures

[Fray Bentos]

5 can mean bad tube, especially going green also.

[Timothy Murphy]

In my experience, whatever is wrong with it, repairing it is almost certainly a waste of money.

[dave stanton]

Could also mean just dry joints on the gun connector.

Dave

[The Natural Philosopher]

Bang the set hard. Its usally a semi short in the gun assembly. Also blow any dust out of the tube rear area.

[The Natural Philosopher]

Sony tubes are expensive and tricky to replace.

Dry joint in gin area as suggested elsewhere aa deifinite piss-o-bolity.

[manatbandq]

Too many dry gins and joints?

MBQ

[Dave Jennings]

Hi,

funny, a US site suggested this too. If it's something relatively simple I'd certainly have a look, as I know that should I call out the Sony engineer here it WILL require a new tube - and that's probably not worth putting in.

Like I said in the OP, I've never had a problem with Sony before, and I'm loathe to bin an otherwise terrific TV if it's fixable, especially if it's POSSIBLY a simple fix. The downside is I have no idea WTF the gun connector is!! However I'm fine with electronics ( my company manufacture ruggedished handheld PDA's here in Scotland ) so I'm sure it can't be rocket science, at least to have a look! ( Famous last words, or what? )

[Fray Bentos]

the gun connector is the little board at the back of the tube, the one that can have a couple of kilovolts on it.

beware...

[Dave Jennings]

Aharr.Now, daftie question, but is this something I should be wary of even when I've disconnected the TV from the mains or not? I'm guessing I don't lick it to see if I get some kind of kick. 8^ )

[The Natural Philosopher]

Never a good mix. One or the other..

[The Natural Philosopher]

...for some minuets after the set is switched off possibly..

Yes.

>

[The Natural Philosopher]

Prodding at it with a neon screwdriver should show anything that is nasty, and should leak teh voltage away safely via a few meghomns and your body..or yoi could attach the 'cold' end of the screwdriver via a wire to an earth..