Re: Panasonic SC Board - BAD 30F131 IGBTs
I think you could have holed that in one,as with all things there will be some form of testing at the end of the line,so could well be that these are from the reject bin.I had a look on eBay and one seller has 50 pcs for £9.79 post free, these cannot be grade A Toshiba parts?
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Re: Panasonic SC Board - BAD 30F131 IGBTs
Not UT. I'll wait first and see what they say but they have 99.9% positive , been listed since 2010 and sold 189 lots of 10.
That's the surprising part. I must admit I left positive before I had installed them, they looked the real deal.
Is it possible for a percentage of these to fail in the manufacturing process like maybe someone has got hold of a bunch of out of spec parts and flogging them?Leave a comment:
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Re: Panasonic SC Board - BAD 30F131 IGBTs
Hi TW I have not had any problems with the ones from utsource,I have used well over 160 of them. I brought two batches of 100 and will need to get more soon. were did yours come from you say eBay but who was the seller ? just so members can steer clear. these board can be bad news to repair without running into problems with faulty IGBTsLeave a comment:
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Re: Panasonic SC Board - BAD 30F131 IGBTs
managed to get it going using some of these. I had 1 used original, 3 new and 1 out of the 4 just installed and blew up that seemed like it survived.
Did some resistance checks and 2 gave consistant 1.3 - 1.4 meg, 2 were about 1 meg and 1 gave 220k which stood out. that was a new part never installed. So I paired them up by readings and working.
not much confidence with these though on how long they'll lastLeave a comment:
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Panasonic SC Board - BAD 30F131 IGBTs
Not one of my normal posts but just had something unusual happen to me.
I've done a couple of TNPA5335 boards recently and I had run out of 30F131. Had an extra 5351 laying around so robbed Peter to pay Paul.
That got the 5335 up again and just needed some replacement 30F131.
So after about 3 weeks from Asia, I get 10, thought I'd return that 5351 to being working.
Installed the 3 new parts and pop. Not even a brief flash on the screen. So now I decide to replace 4 since they were two pairs and maybe one pair were not working the same.
pop, again, all 4 shorted. the time previous all 3 had failed but the single OEM unit had survived.
Again there was no issue or failure with this board. So I figure no point using these again.
grab another 5335 board which I had fixed using some Fairchild IGBTs as subs and been happily working for over a year.
Desolder those , then Solder them in and board is working.
These parts looked pretty good and appeared to be OEM but I'm calling them fakes.
I did get a meter and they appeared to react similarly, trashcan
Ebay purchase,
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Vizio e601i-A3 - Has Sound and Display, But No Backlight - Bad Power Supply Board or Bad LED Bulbs ?I was given this TV from my great uncle. He said it just wouldn't turn on one day out of nowhere, replaced the TV, and gave it to me to possibly fix and use for myself.
Upon bringing it home and plugging it up, it showed a standby light.
I powered it on and without a flashlight, the display showed the "V" but the lighting is very dim, but visible.
The screen seems to blackout and stay black, but with a flashlight I can see the display.
With my Playstation 4 connected via HDMI, and running a game I can hear sound.
Assuming... -
Hi, this is my personal laptop, which the original board (lets call it Board A) blew up PU8700 (TPS51486), making a hole on the board, i had left the laptop at my desk one day with the battery fully charged and didn't touch it for a week, but when i tried to turn it on it didn't
Thought the battery was dead, so i plugged in the charger then tried to power on, the power LED blinked once, charged LED still orange, unplugged the charger, plugged in again and I noticed the "magic smoke" smell, so i unplugged the charger, removed the back cover and saw the blown IC (the "magic... -
I did not have any 27uf @ 50 volt capacitors but one nice thing is that it has enough room for two capacitors in parallel a 22uf and a 4.7uf @ 50 volts 22 plus 4.7 equals 26.7uf which so very close to 27uf I will show some pictures of it sometime tomorrow
This is one of the shit est boards I seen in a very long time and it was the daughter board the traces just lifting off the board I had to use the capacitor leads to repair the the traces and the main board is not any better because I had to repair several traces for the daughter board to the main board
After all of... -
I have a Panasonic TC-P54VT25 that will power on and prime the display but there is no image at all.
The panel is primed as there is a slight glow from the entire panel. This means the problem should be logic related. The service manual also confirms this and recommends replacing the A or the D board.
I have tried to get the TV to display the test sequence but I have been unable to and I don't even know if this TV has a test sequence or not. I tried following tom66's instructions in post #3 on this thread https://www.badcaps.net/forum/showthread.php?t=26790. There was... -
All left and right refers to looking from rear of TV (or looking from front with TV upside down)- TV came with vertical bars and no image. Found faulty TVS on left buffer board. Also replaced T-Con (may have damaged the original while hot air removing components, board has slight warp) and have full image but few horizontal lines on the screen. Some of the lines appears to be 2 pixel tall while others are 1 pixel tall.
- Disconnecting left and right buffer board potentially reveals problems on both sides with different signals (unless this T-Con require jumper like Samsung FB_TRDY1&3) Fault
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