Dead Vestel 17IPS71 power board

[dick_barton]

Re: Dead Vestel 17IPS71 power board

With VDD = 192 as per an earlier post by London-Freddie and your readings showing no resistance to ground on any of the pins I think it's time to replace the IC.

[london-freddie]

Re: Dead Vestel 17IPS71 power board

hi thanks for all this help.
just replaced power board with used ebay board, tv now working fine with this replacement board. However I have also ordered a replacement IC so when that arrives I will replace the IC on the fault board and see if I can get it working, will let you all know how I get on when it arrives and it is fitted.
thanks again all

[ReeceyBurger123]

Re: Dead Vestel 17IPS71 power board

Ok cool keep us updated.

[london-freddie]

Re: Dead Vestel 17IPS71 power board

yes will do, i want to fix this board, now though just to say it is fixed

[dick_barton]

Re: Dead Vestel 17IPS71 power board

Yes please. It will be interesting to see if it fixes the problem and will be useful for others to know who may have the same problem.

[budm]

Re: Dead Vestel 17IPS71 power board

BTW, did you have a chance to take the resistance readings of the new board and compare them to the bad board?

[ReeceyBurger123]

Re: Dead Vestel 17IPS71 power board

BTW, did you have a chance to take the resistance readings of the new board and compare them to the bad board?

Bloody good idea Bud !

[london-freddie]

Re: Dead Vestel 17IPS71 power board

OK update on this dead board, replaced ic FAN6300 and board is now powering up with several output pins now reading 12v, no output voltages were present on this board before.
Not tried it in the tv as thats all working with the replacement ebay board and I dont want to take this tv apart again unless i have to, however I am confident this board is fixed, so you guys can give yourselves a big pat on your back you were right it was the ic giving the problem, I would never of found the fault by myself. Thanks again

[budm]

Re: Dead Vestel 17IPS71 power board

Thanks for the follow-up.

[london-freddie]

Re: Dead Vestel 17IPS71 power board

No problem thanks again for the help

[ReeceyBurger123]

Re: Dead Vestel 17IPS71 power board

Thats great Will surely help others, and possibly me if I get one of these which will be soon. Not seen many IPS71's yet lol

[london-freddie]

Re: Dead Vestel 17IPS71 power board

I would like to try it in the tv and prove to myself it is working but as you said in one of your vids the lcd has no support at all when the back cover is removed, far too much flexing on the screen for my liking with the backremoved, would hate to damage the screen and waste all the work everyone has put into this to get it working

[london-freddie]

Re: Dead Vestel 17IPS71 power board

Have got another tv which I was given sat in the bedroom which has now been there since before christmas, may try and get that down next week and start playing with it
Its a 42 Panasonic plasma standby flashing and not powering up

[ReeceyBurger123]

Re: Dead Vestel 17IPS71 power board

Well if you need help with that Panny you know where to come. No issue is too hard for us

[Dazk80]

Re: Dead Vestel 17IPS71 power board

I am trying to fix a dead Vestel 17IPS71 and came across this thread (i`m impressed with the knowledge on here so thought i should register), i think i have the same problem as the op and i`m going to swap the ic.

My question is the only replacement i can source quickly is a FAN6300AMY, is this a suitable replacement?

[fnets]

Re: Dead Vestel 17IPS71 power board

I have this problem and the same board.



Do I need to remove the board the test the fuse?

[vinceroger69]

Re: Dead Vestel 17IPS71 power board

yes thats the fuse you need to test so yes remove the board turn it over and measure resistance across the fuse it should roughly the reading you get when you short your multi meter leads together.

[fnets]

Re: Dead Vestel 17IPS71 power board

ok thanks. fuse ok. I'd love to fix the board but my skills are limited. its probably best I replace it but are there some checks I can do to see if there is any output?

[vinceroger69]

Re: Dead Vestel 17IPS71 power board

put the power supply back into the tv you could then test the voltage on one of the connectors starting with 5v stanby .

[fnets]

Re: Dead Vestel 17IPS71 power board

would this be safer? "could you measure the dc voltage on CN3-CN4 (black connector) with the mainboard disconnected and see if there is at least a standby voltage"? but not sure where to put the probes.