Re: Sony 46EX400 won't turn on, 2 blinks

I've just checked and we've got a service manual for this set if it helps? If you need it, email me on [email]djhignett@live.co.uk[/email] and I'll email it back to you.

DaveRe: Sony 46EX400 won't turn on, 2 bl.../> <br /> DaveRe: Sony 46EX400 won't turn on, 2 blinks

I've just checked and we've got a service manual for this

Re: Sony 46EX400 won't turn on, 2 blinks

Hi!

Firstly, I've never had one of these sets on my bench, but I'll do my best with some pointers if I can.

The T-CON voltage does seem very low. Have you taken these measurements with the ribbon disconnected, ie; with the PSU running open, or did it have the loads connected to it?

If it's open when you've measure the O/P, then I'd be looking at caps on the PSU board. I'm sure you already know that just because they're not bulged, it doesn't mean they're operating as they should.
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Re: Pic of cap, is it a Badcap?

Hi!

Have you tried clipping a lead and testing the cap? I'd try an oscilloscope on the output of your PSU to see whether there's an excessive amount of ripple etc. The cap in question looks like a big old smoothing cap, so if it has passed it's best, then I'd expect a lot of movement in the output of the PSU. On the other hand, you're dealing with relatively high currents, so heat won't be in short supply inside the case of the PSU, so it's inevitable that the laquer will have seen better days really.

Hope this helps! ...