Toshiba 32BV702B - PSU - 17PW25-4 - V1 - 250111 - 23023197 Opinion Needed

[Fred53]

Hi All on Badcaps,

After Many Weeks of searching I finally found a PSU for My Toshiba 32BV702B

Toshiba 32BV702B - PSU - 17PW25-4 - V1 - 250111 - 23023197

100% Match, Delivered next day, (Not eBay I must add)

Purchased from an on line used TV parts seller, with a good rating.

Imagine my dismay!!! when I unpacked the PSU expecting to get my TV back up and working and found this before I even thought about fitting it.

1st pic Mine Top, 2nd pic Replacement Top , 3rd Pic Mine underneath, 4th pic Replacement Underneath.

Sorry about that.

I have added some pictures top and bottom of both mine and the (TESTED WORKING) PSU that I have just Purchased.

R977 has a slight scorch mark underneath, not very visible in the picture.

BUT WHY HAS THE GUY PAINTED THE R974!!!

IS IT A MAGICAL PAINT THAT REPAIRS FAULTY ELECTRONICS!!!

Opinions needed Please.

1st Pic Mine Top, 2nd Pic Replacement Top, 3rd Pic Mine Underneath, 4th Pic Replacement Underneath.

[selldoor]

Re: Toshiba 32BV702B - PSU - 17PW25-4 - V1 - 250111 - 23023197 Opinion Needed

I think your part numbers are incorrect if you go in and edit it now I will change this post
You say R974 is painted should it be 904

[budm]

Re: Toshiba 32BV702B - PSU - 17PW25-4 - V1 - 250111 - 23023197 Opinion Needed

R977 still shows as 0.39 Ohms + test leads' resistance? Notes that R977 (0.39 Ohms) and 974 (0.33 Ohms) are connected in parallel.

[Fred53]

Re: Toshiba 32BV702B - PSU - 17PW25-4 - V1 - 250111 - 23023197 Opinion Needed

I think your part numbers are incorrect if you go in and edit it now I will change this post
You say R974 is painted should it be 904

Location R974 is painted, blown and fitted backwards it appears to me, but this is not a test, I am just wondering how someone could supply this board as tested working? and hope to get away with it

[flocko]

Re: Toshiba 32BV702B - PSU - 17PW25-4 - V1 - 250111 - 23023197 Opinion Needed

Hi you dont tell us what one is the new board? just looking at the photos the board that has the R974 with a bit out the side,looks to have had Q935 replaced and all the soldering on it looks poorly done? Flocko

[Fred53]

Re: Toshiba 32BV702B - PSU - 17PW25-4 - V1 - 250111 - 23023197 Opinion Needed

R977 still shows as 0.39 Ohms + test leads' resistance? Notes that R977 (0.39 Ohms) and 974 (0.33 Ohms) are connected in parallel.

Thanks for that Budm

I just purchased the board as a replacement for a blown one, but as soon as I saw it, it looked bad to me.

I am not good enough to repair boards just replace but this was so glaringly wrong :/

[selldoor]

Re: Toshiba 32BV702B - PSU - 17PW25-4 - V1 - 250111 - 23023197 Opinion Needed

Ok Didnt understand what you were saying and couldnt expand the pictures I now see what you are saying. I suppose the question might be, does the board work? if so it could well have been tested and working. Only the seller will be able to say why the resistor is painted though if the board works they may not even have looked at it. What does it measure?

[flocko]

Re: Toshiba 32BV702B - PSU - 17PW25-4 - V1 - 250111 - 23023197 Opinion Needed

How do you fit a resistor backwards,have you fitted and tested the board and found it not to work Flocko

[Fred53]

Re: Toshiba 32BV702B - PSU - 17PW25-4 - V1 - 250111 - 23023197 Opinion Needed

Ok Didnt understand what you were saying and couldnt expand the pictures I now see what you are saying. I suppose the question might be, does the board work? if so it could well have been tested and working. Only the seller will be able to say why the resistor is painted though if the board works they may not even have looked at it. What does it measure?

I have just fitted it and it is Dead

[selldoor]

Re: Toshiba 32BV702B - PSU - 17PW25-4 - V1 - 250111 - 23023197 Opinion Needed

well back to the seller then? - just one thing are you sure the board was the same version. The writing above where it says VESTEL is missing on the new one?
Are you sure we cant help try to fix the old one? I see one of the resistors 977 has a
hole in it are there other problem areas?

[Fred53]

Re: Toshiba 32BV702B - PSU - 17PW25-4 - V1 - 250111 - 23023197 Opinion Needed

well back to the seller then? - just one thing are you sure the board was the same version. The writing above where it says VESTEL is missing on the new one?
Are you sure we cant help try to fix the old one? I see one of the resistors 977 has a
hole in it are there other problem areas?

The back of the board has an IC Blown apart on the original and if you look at the replacement enlarged one of the jumpers appears to be blown also.
Thanks anyway though

[selldoor]

Re: Toshiba 32BV702B - PSU - 17PW25-4 - V1 - 250111 - 23023197 Opinion Needed

Perhaps if you can read the part number off the IC on the new board and post it
it will be a help for others if theirs blows in future.

[Fred53]

Re: Toshiba 32BV702B - PSU - 17PW25-4 - V1 - 250111 - 23023197 Opinion Needed

Perhaps if you can read the part number off the IC on the new board and post it
it will be a help for others if theirs blows in future.

When you click on the thumbnails, navigate to the picture you want to look at then click on the picture it should open a Full Screen 5 Mb clarity picture.

The IC details are obliterated, whether this is due to cleaning of the residue from the failure or over temp during the failure of the PSU I am not sure.

[Alastair E]

Re: Toshiba 32BV702B - PSU - 17PW25-4 - V1 - 250111 - 23023197 Opinion Needed

Hi you dont tell us what one is the new board? just looking at the photos the board that has the R974 with a bit out the side,looks to have had Q935 replaced and all the soldering on it looks poorly done? Flocko

Hmm--They Always look like that, because they are crap vestel PSU's!

The chip that lost its head looks to be the PFC controller, probably both the PFC MOSFET and the main chopper MOSFET are both stuffed along with the chopper controller chip...

These PSU's are available new for about £40, no point in buying S/H!

[Fred53]

Re: Toshiba 32BV702B - PSU - 17PW25-4 - V1 - 250111 - 23023197 Opinion Needed

Hmm--They Always look like that, because they are crap vestel PSU's!

The chip that lost its head looks to be the PFC controller, probably both the PFC MOSFET and the main chopper MOSFET are both stuffed along with the chopper controller chip...

These PSU's are available new for about £40, no point in buying S/H!

Please let me know where Thanks

[Alastair E]

Re: Toshiba 32BV702B - PSU - 17PW25-4 - V1 - 250111 - 23023197 Opinion Needed

http://www.chsinteractive.co.uk/sear...query=17pw25.4

[Fred53]

Re: Toshiba 32BV702B - PSU - 17PW25-4 - V1 - 250111 - 23023197 Opinion Needed

http://www.chsinteractive.co.uk/sear...query=17pw25.4

Many Thanks for the Link Alastair, I have contacted them to confirm compatibility of the board as I want to make sure 100% this time that I get a good one