matsui mat32lw507 not turning on

[wayne riley]

as i says above the tv stays in stand by mode and wont turn on. tried all the usual stuff like plug it out fa few a days and plug it back in. had a look at the capasitors and they all seem fine. does any1 know what the problem might be.
the board type is 17pw20.1 010507

[t.j.]

Re: matsui mat32lw507 not turning on

welcome to badcaps! please post clear pics of boards an just because they look ok does not mean they are! what tools do you have, a multi meter>? esr tester? soldering iron>?

[wayne riley]

Re: matsui mat32lw507 not turning on

in the first pic bottom right you can see a orange colour fuse (c862) thing (new to this so dont have a clue)
this fuse is not giving any reading. were as the same fuse (c836) on top left i giving a readig of 1427. could this be my problem an what is it called.
ive also got a fuse (r960) under the box thing on top left not giving any readings. ive added a pick of said fuse. also no reading off c874 10uf but getting reading off c848 10uf of 972.

sorry if im all over the place as this is my first time at this

[tom66]

Re: matsui mat32lw507 not turning on

Ah, Vestel. We meet again :/.

You can either replace the PSU (about £18) or you can fix it by replacing those two grey boxes (15nF 630V capacitors) near the top of the main transformer, as I've indicated in the image.

Sometimes there are other causes of the fault, so I like to just replace the entire PSU when I work on a Vestel which is getting stuck in standby.

[wayne riley]

Re: matsui mat32lw507 not turning on

hi tom. them two that you said are giving readings of 622 and 623.
so will i still replace them? what about the other things i mentioned esp the orange fuse.

can you direct me in the right direction to pick upa new board as im having trouble locating 1. im still going to mess around with the old 1 for experience.
cheers tom.

[tom66]

Re: matsui mat32lw507 not turning on

What are you measuring them on?

[wayne riley]

Re: matsui mat32lw507 not turning on

on a digital multi.
i have removed r96 c862 ad 874 as im not getting any readings rom tem in or out of board.

[tom66]

Re: matsui mat32lw507 not turning on

What range of the meter?

Ohms?

Recommend you replace those components. 90% of Vestels have those caps failed. But personally, I've always found they have one or two more problems, and spent hours chasing the problem around, with no luck. Then again, I usually get the TVs in much worse condition, usually completely dead, so maybe those caps kill other stuff. Personally, I'm not sure.

You can use 17PW15-9 as a substitute IF your connections match - check photo very carefully (I have done it before on a 32 inch Goodmans and Wharferdale, both Vestel chassis):
http://www.ebay.co.uk/sch/i.html?_nk...at=0&_from=R40

[wayne riley]

Re: matsui mat32lw507 not turning on

pic of meter below and settings its on.
sorry as im a total newbie here

[wayne riley]

Re: matsui mat32lw507 not turning on

just checked the 17pw15-9 looks very similar except for were the connections go there is 1 more block thats not on the 17pw20.1. would this be a prob?

[tom66]

Re: matsui mat32lw507 not turning on

I don't think it would be as long as it has all the right ones for the 17PW20 it should be fine.
Your meter is on 2kohm range, those caps do not seem right, but put back the resistor.

[postram]

Re: matsui mat32lw507 not turning on

hello to you all , I hope someone can help me ,I have a matsui tv (MAT32LW507) and I iam having trouble has it will go to standby when switch on , then when I press the standby button on the tv to go power up ,the light gos dimmer (has if its on, BUT no picture (still a black screen ) ,I have looked at the trouble others are having with the same sort of problem ,but it all seems to be mixing me up what repair order I should go for (ie replace the two 15nf 630v capacitors 1st ) or what . please help ... mark