Pioneer Kuro PDP-LX5090 7 blinks intermittent

[tom66]

Re: Pioneer Kuro PDP-LX5090 7 blinks intermittent

I think it's probably worth it, given free, but it's not going to blow you away picture quality wise.

[Shinju]

Re: Pioneer Kuro PDP-LX5090 7 blinks intermittent

If I had more room to horde these monster plasma panels I probably would. I just gave away a Hitachi 55" Ultravision 55HDT51 and that Sammy 5084 I fixed for cheap just to get them out of my hobby cave lol.

I got a LG LG 60PV400 that I swapped out for the 51" Sammy 5350, I found someone's professional 20 point IRE calibrations for the PV400 and put them in, I got to admit for a bottom end Plasma it looks pretty nice all dialed in.

Defiantly looking forward your fix on this Pioneer!

[tom66]

Re: Pioneer Kuro PDP-LX5090 7 blinks intermittent

It would be nice if this panel is pre-calibrated. If not I will have to use some references. Kuros are pretty good out of the box on "Movie" apparently, which isn't that surprising.

I normally wouldn't calibrate a TV, but it's worth doing it for such a high end TV. I usually go by eye on the contrast/brightness/colour/sharpness, but I'm almost certainly wrong.

[Shinju]

Re: Pioneer Kuro PDP-LX5090 7 blinks intermittent

I hear you on that, the calibration numbers I found the user liked the warm side of picture color and qualities. I just adjusted them more for a neutral as I am not a warm temp viewer.

The Disney WOW disc is pretty nice tool if you don't have it.

[tom66]

Re: Pioneer Kuro PDP-LX5090 7 blinks intermittent

Me too. Warm is the accurate setting but I personally prefer neutral to cool tones. Ultimately it's more of a preference thing to me. (Don't say that on AVSForum, you'll probably be lynched. Especially if you set a Kuro to torch mode, although you probably deserve it if you do.)

[tom66]

Re: Pioneer Kuro PDP-LX5090 7 blinks intermittent

[Caleb]

Re: Pioneer Kuro PDP-LX5090 7 blinks intermittent

Lucky you, what did the fault end up as? Ive been searching for one of these in my price range without any success for some time now
edit just looked again and found one for 250 mostly working has purple haze on top 3" of screen, do you think the buffers are failing? and are they available?

[Shinju]

Re: Pioneer Kuro PDP-LX5090 7 blinks intermittent

Iron Man!

Nice score tom!

[tom66]

Re: Pioneer Kuro PDP-LX5090 7 blinks intermittent

It's intermittent, so I have to fix it still. It just powered up from cold.

[tom66]

Re: Pioneer Kuro PDP-LX5090 7 blinks intermittent

Lucky you, what did the fault end up as? Ive been searching for one of these in my price range without any success for some time now
edit just looked again and found one for 250 mostly working has purple haze on top 3" of screen, do you think the buffers are failing? and are they available?

Purple haze is actually a common fault - look up "Kuro red tint".

This TV has it very faintly, it is fixable, it requires an RS232 terminal. I will do it after the repair. You have to fire some commands at it, to reset some type of internal counter.

The buffers are NON-REPLACEABLE. They are bonded to the panel via soldered ribbon . But you could conceivably replace an IC on the buffer board. I think with some hot air, you might just be able to remove the buffer ribbon - there is only one and it's a long one. But I wouldn't want to try it.

[tom66]

Re: Pioneer Kuro PDP-LX5090 7 blinks intermittent

Bingo

NJM2846 on board 1.8V regulator
Working = 1.79V
Faulty = 0.01V, control signal & Vin still present (3.3V)

On Audio_IO board

[Caleb]

Re: Pioneer Kuro PDP-LX5090 7 blinks intermittent

On the add it says it is intermittent, only on the top 3" and shows itself on white backgrounds. I did find the ics availible I thought it sounded like an open in one of the ics. the more common red tint appears to be on black and affect the whole screen.

[tom66]

Re: Pioneer Kuro PDP-LX5090 7 blinks intermittent

Hmm, sounds potentially risky to me, unless it was very cheap I wouldn't take the risk.
The IO board and main logic board are worth about $150 total, the sustains and PSU are worth very little, as they rarely go bad.

[tom66]

Re: Pioneer Kuro PDP-LX5090 7 blinks intermittent

Freeze spraying regulator brought it back to life, this is looking like a nice one. Just need to find NJM2846 in the UK.

[tom66]

Re: Pioneer Kuro PDP-LX5090 7 blinks intermittent

Aside from the clipped ground lead, it looks like BA18BC0WFP will fit (the tab is still grounded, which is probably the only important thing.) It's available from Farnell.

[vinceroger69]

Re: Pioneer Kuro PDP-LX5090 7 blinks intermittent

tom does this look right?
http://www.wiltsgrove.co.uk/search-results.php

[tom66]

Re: Pioneer Kuro PDP-LX5090 7 blinks intermittent

I can't see anything there?

[vinceroger69]

Re: Pioneer Kuro PDP-LX5090 7 blinks intermittent

link works for me? its the same part number you gave in you post MJM2846DL3 1.05A 1.8VOLT T0252-5 IV REG LDO

[tom66]

Re: Pioneer Kuro PDP-LX5090 7 blinks intermittent

Ah, I see it now
http://www.wiltsgrove.co.uk/product-...=NJM2846DL3-18

thanks

[vinceroger69]

Re: Pioneer Kuro PDP-LX5090 7 blinks intermittent

is that expensive? its £4.95 plus £2.95 postage plus vat