17IPS20P led fault

[sutty86]

Right guys ,
I have a JVC TV which has a 17ips20P unit not the more common 17ips20
Me being an idiot automatically bought a standard 17ips20 for a good price at £17 to hopefully just replace it,
Well anyhow on refitting it has a different led connector has an extra pin so will not fit....
Looked at getting a 17ips20p cheapest is £50 online

So here I am ,I thought I would scratch your heads and possibly do some soldering.

Will send photos of both boards obvious deformity on the 17ips20p lots of soot initially at top of the board.

Fault on TV is , turns on great , but randomly the back light switches off and unable to see screen ,(you can see with a torch) this can range from working for 5 mins to 4 hours.
And a simple reset of the TV rectifys this temporarily


Tried uploading photos via the forum but keep getting fatal error

https://m.imgur.com/a/YuASiUP

[diif]

Re: 17IPS20P led fault

Turn the backlight down and see if the TV stays on longer, your problem sounds like a faulty/weak LED(s).

[sutty86]

Re: 17IPS20P led fault

Yeah it does stay on longer not massively longer, is it a led replace jobby then?

[nomoresonys]

Re: 17IPS20P led fault

If it stays on longer then more than likely bad led/s.

[sutty86]

Re: 17IPS20P led fault

I'm a fool , I'll return the board then

Is it a difficult job to replace the LEDs?

[nomoresonys]

Re: 17IPS20P led fault

Some tvs are easier than others but yes it's pretty much a full teardown, check some youtube videos, MUST be very careful with the panel, they are very flimsy and easy to break and some have 2 sided tape holding it down.

[diif]

Re: 17IPS20P led fault

I'm a fool , I'll return the board then

Is it a difficult job to replace the LEDs?

Depends which LEDs and lenses are fitted. I use a mini hotplate which makes removing and replacing the LEDs easy but the alignment of the lenses can be tricky. If the alignment isn't spot on you can get bright rings showing on the picture.

[Askic]

Re: 17IPS20P led fault

Hello guys,

instead of opening a separate thread, I decided to use this one, since it's not too old and the problem I have is very similar.
I have 39 inch LED TV with 17IPS20 power board. I also have very similar problem. Sometime, I can turn TV on with remote control and it works for a few minutes and then randomly picture goes black, while sound is still ON. I can also switch channels with remote control. I suspected something is wrong with the power board, and I have fond the following very good youtube video:
https://www.youtube.com/watch?v=uPI1QBE0CxI

However most of times after I turn ON the TV, there is no picture (black), but there is sound.

The problem I have is mentioned at 2:00. When turning on the TV, there is a very shirt jump in output DC voltage to cca 185 VDC and then it switches back to 120 VDC. The output voltage is expected to be about 165 VDC if everything is OK. On the cap shown at 5:45, I have 395 VDC (capacitor is 450V), so this could mean that power board is OK and problem is LED backlight. Is there something else I could try with this power board to be sure if it is OK?

Thank you very much

[Hamie]

Re: 17IPS20P led fault

I'm a fool , I'll return the board then

Is it a difficult job to replace the LEDs?

You should keep the board and resell it yourself.
Not the sellers fault you ordered the wrong part.

[Askic]

Re: 17IPS20P led fault

Dear experts,

I have a question regarding the replacement Vestel 17IPS20 board. I have one from 39inch Telefunken TV and need to buy replacement board. I have ordered the exact model 040313R5. However I now see that the output connectors to the LED panel are different. This replacement model has connector with many pins, while the original board has connector with only two pins.
I know I'll need to solder old connector on the new board. I'm not sure which pins I need to use.

[budm]

Re: 17IPS20P led fault

'040313R5' is that the number (PCB Assembly) printed on the bar code sticker?
17IPS20 is the P/N of the blank PCB which can be stuffed to make many difference PCBA for the required. TV model

[Askic]

Re: 17IPS20P led fault

Hello budm,
on the bar code sticker it is written the following:
2311579-27002042 298.
The number: 040313R5 is written on the PCB

[William1967]

Re: 17IPS20P led fault

2311579 is the number you need.