Pioneer lx6090 2 x flashing red light at start up

[Arnie65]

Hello,

Sorry for reviving a very old thread, but I happen to have the same issue.

I have a Pioneer PDP LX5090H with low hours that has been in storage for a number of years.

Today, I powered it up and all appeared fine... for about 20 mins, anyway, after which the screen when blank. I now have the repeating 2 red flash codes when trying to cycle the power, with the screen apparently dead.

I removed the back cover panel and checked the Y-SUS and X-SUS drive boards (following advice in this thread). The first thing I noticed is that all of the large, 280uF caps have a slightly domed top and when checking the transistors on the aluminium heatsinks, there are 6 dead (shorted) on the Y board and 4 similarly dead on the X board.

I guess I have to replace the boards now, but my questions for which I'd be most grateful for some pointers are:

1.) is it likely that the caps went bad whist the TV was in storage for 4 years and have consequently caused the transistors (IGBTs) to fail from over-voltage spikes ?
2.) or is it likely that there is some fault in the main PSU that has precipitated to the X and Y boards, damaging the caps and transistors ?

It seems to be cheaper to replace the complete boards with used good ones rather than replace the 10 transistors (and maybe other components). However, how can I know if the PSU is the faulty culprit, in which case it could happen again?

Many thanks for any input.

[ReeceyBurger123]

Re: Pioneer lx6090 2 x flashing red light at start up

Meh........

[hitechtherealone]

Re: Pioneer lx6090 2 x flashing red light at start up

Another nice read with a positive conclusion. Cheers for that info Tom bout outside pins of the fets talked about as low to s/c due to the design of the circuit. One to remember.

[ReeceyBurger123]

Re: Pioneer lx6090 2 x flashing red light at start up

Awesome work also Tom knows how to do that You will need an RS232 cable and the remote

[kamei10]

Re: Pioneer lx6090 2 x flashing red light at start up

Hi guys, here again an update about my pioneer, take longer due other things that needed to do first. I have order another new ysus board and placed it in today with all the screws on the board and now its working fine, let it on test for tonight and see it stay ok.
Is it possible to check the powered on hours of this model ?

[tom66]

Re: Pioneer lx6090 2 x flashing red light at start up

Or that lol

I must have missed why some random seller deserves to be ripped off just because you (or in this case the OP) made a mistake.

[ReeceyBurger123]

Re: Pioneer lx6090 2 x flashing red light at start up

Or be honest, say you broke it and buy a new one?

Or that lol

[kamei10]

Re: Pioneer lx6090 2 x flashing red light at start up

It could be no issue that it not match the original part number ?

[tom66]

Re: Pioneer lx6090 2 x flashing red light at start up

Yeah you need all them in when testing sustain drivers, seen many people do this. Send it back and say its faulty and get a replacement off them.

Or be honest, say you broke it and buy a new one?

[ReeceyBurger123]

Re: Pioneer lx6090 2 x flashing red light at start up

Yeah you need all them in when testing sustain drivers, seen many people do this. Send it back and say its faulty and get a replacement off them.

[kamei10]

Re: Pioneer lx6090 2 x flashing red light at start up

yes indeed, i measure between the local ground and the buffers and have no contact between.
I have at least one screw in every row, all the buffers are grounded with one screw to the ysus and at the middle and the top of the ysus are they at the local ground
Could it be repaired as i have now 3 ysus boards or does i need to order another one ?
If i measure the at the 2 small connectors with 5 pins on the ysus, the one on for the top print measured OL Ohm and the 5 pins that go with the connector that goes to the bottom is new 3M OHM, when i received i checked that pins and they were both OL OHM so it could be that is dead

Tough it was easy to repair itself but not
I was tired to put always all the screws in it, as they are a lot of screws on the board and really much to close the backpanel

[ReeceyBurger123]

Re: Pioneer lx6090 2 x flashing red light at start up

Ohh dear think you killed your Ysus then. These use the screws on the board to make contacts to the buffers as well as local ground. With out them in place it can cause issues.

[kamei10]

Re: Pioneer lx6090 2 x flashing red light at start up

checked with x drive disconnected, same result 7 red blinks, with y drive disconnected 3 red blinks

[kamei10]

Re: Pioneer lx6090 2 x flashing red light at start up

Put not all screws in, only 4, normally is the ground of all screws connected together i though so only placed 4 to get the print grounded

[ReeceyBurger123]

Re: Pioneer lx6090 2 x flashing red light at start up

So you didnt put the screws into the Y sus when testing ? If so bad move there buddy.

[kamei10]

Re: Pioneer lx6090 2 x flashing red light at start up

the original was awv2541 D and the new is AWV2541 B
The old was ANP2214-B and the new ANP2214-A
Not put all the screws in when testing as it should only to test and pioneer has a lot of screws on everything :-)

[ReeceyBurger123]

Re: Pioneer lx6090 2 x flashing red light at start up

7 blink is Ysus, did you buy the exact board for that set ?

[ReeceyBurger123]

Re: Pioneer lx6090 2 x flashing red light at start up

Hmm you did put all screws in when testing didnt you ? Also maybe unplug X drive and see if blinking changes ?

[kamei10]

Re: Pioneer lx6090 2 x flashing red light at start up

Hi guys here an update
Received new ydrive board, placed in the tv and it worked........ for 5 minutes
I had a good image but now i got 7 red blinks instead of 2, even if i try again 7 red blinks.
What could be wrong now ?
I have tested the tv upside down on table, could that be a mistake ?
As i have a blue led i just have tested less than a minute my mediaplayer to a hdmi board and once it started up and i would select
a movie to start got the 7 red blinks
Vsus 210 and VADR 75VDC ok now

[kamei10]

Re: Pioneer lx6090 2 x flashing red light at start up

Is it possible to use another part number ? The original part have awv2541-D on it and the other awv2541-B but the other number on it is ANP2214-B and thats the same as mine or is it just the revision number ?