this amp board keep burning t1p4c1 transistor any help would be great think the resistor and the input section may be the problem not correct rating
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Re: power speaker board
That TIP41C got mighty toasty. Catastrophic failure usually is caused by catastrophic issues... do you know what happened before it started frying these? This is not the first transistor it fried?
Who made the amplifier? What model is it, perhaps someone can find the schematic.
Else please show a good photo of the tracks on the other side of the board. -
Re: power speaker board
Djokovic here are so more photosAttached FilesComment
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Re: power speaker board
possibly fake replacement .. check the outputs and the connections .Comment
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Re: power speaker board
clean up that mess and repair if needed .Comment
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Re: power speaker board
i hope you used an insulator on that tip41cComment
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Re: power speaker board
not supposed to get hot, you have a short somewhere...question now is... what is that transistor being used for?Comment
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Re: power speaker board
reason why I ask is something seems very wrong with the circuit.
Yes the TIP41 is paired with the TIP42 but I would imagine audio amplifiers should be stereo these days and this is not paired with another channel so I don't know what it's doing. Is this a 2.1 amplifier perhaps, still odd the high power transistors are paired and these mere TIP41/TIP42 is not if they go to the LFE.
Also resistors usually do not go short when they fail.Comment
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Re: power speaker board
what is the full history of this thing from when it worked up until now ? to me anything could have happened from a lightning strike to anyone's guessComment
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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... -
[HELP] Acer AN515-55 (LA-J871P Rev: 1B) – Board won't power on after GPU investigation – Suspecting Super I/O or PCH
Hi everyone,
I'm working on an Acer Nitro 5 unit with the following specs:- Motherboard: LA-J871P Rev: 1B
- Model: Acer AN515-55-59MT
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- SNID: 03902728734
Initial Issue
The laptop initially presented graphic issues and driver failure (Code 43) for the GPU.
After preventive maintenance (cleaning, thermal paste, etc.), it powered on normally. We disassembled it again to inspect the GPU, reassembled... -
Hi and thanks in advance for any input you might provide!
I have a Sceptre U550CV-UMRD8POTV83BB 4K LED (this is a dumb tv) that I bought new in August 2021, so It's just completed 3 years.
Main power board model: TP.MS3683.PC821 T-Con board: N4TP546UHDPU2L_BO
Last Sunday I was watching a dvd and fell asleep for about half hour, when I awoke the tv screen was black and couldn't get the dvd menu to show, so I changed the input to antenna and had sound but no picture, turned it off. I then got online and found this great site! ....read many troubleshooting tips and this... -
Hi everyone,
I am trying to fix a samsung washinmachine power supply main board.
I already replaced it with another one to fix the machine but i want to try understand the issue with the old board.
Therefore i hope to be able to get some help to explain what to check in order to troubleshoot.
The power supply board reference is the following: DC41-00189a
I have followed one thread (https://www.badcaps.net/forum/troubl...ingmachine-rel... -
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...
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