Re: Panasonic TH-42PZ85E --> Completely dead!
Anyone know the values of the caps on MC501 board?
Anyone know the values of the caps on MC501 board?
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I only repair Panasonic plasma tv's! Currently owning a TX-P55VT50 and still searching for a ZT60!
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Re: Panasonic TH-42PZ85E --> Completely dead!
I attached a picture of the powersupply and the MC501Attached Filesif you find these attachements useful please consider making a small donation to the site
I only repair Panasonic plasma tv's! Currently owning a TX-P55VT50 and still searching for a ZT60!Comment
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Re: Panasonic TH-42PZ85E --> Completely dead!
I bought some freeze and used it on the mc501. Nothing...I only repair Panasonic plasma tv's! Currently owning a TX-P55VT50 and still searching for a ZT60!Comment
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Re: Panasonic TH-42PZ85E --> Completely dead!
Here a picture of the mc501 board wich is frozen. It was not possible to freeze just this part only....Attached Filesif you find these attachements useful please consider making a small donation to the site
I only repair Panasonic plasma tv's! Currently owning a TX-P55VT50 and still searching for a ZT60!Comment
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Re: Panasonic TH-42PZ85E --> Completely dead!
Measured:
D551: 5v
D606: 0.25v
D702: 4.8/5v
D604/603: 0.15v
L501: 3v
D505: 0.2v
D506: 4.85v
D504: 0v?
Measuring D504 with diode testing says both sides peeping noise.
Replace d504?I only repair Panasonic plasma tv's! Currently owning a TX-P55VT50 and still searching for a ZT60!Comment
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Re: Panasonic TH-42PZ85E --> Completely dead!
Nobody?I only repair Panasonic plasma tv's! Currently owning a TX-P55VT50 and still searching for a ZT60!Comment
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Re: Panasonic TH-42PZ85E --> Completely dead!
if possile remove the diode from the board and retest some times diodes test sc when on a board you remove them and test again there fine.Comment
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Re: Panasonic TH-42PZ85E --> Completely dead!
This diode is fine. I also replaced the 22uf cap but the machine is completely dead....
You dont think its SS board?I only repair Panasonic plasma tv's! Currently owning a TX-P55VT50 and still searching for a ZT60!Comment
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Re: Panasonic TH-42PZ85E --> Completely dead!
Why would it be SS board?Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Panasonic TH-42PZ85E --> Completely dead!
Well if 1 of the cables on SS board is not attached to the powersupply the machine wont do anything. ( my experience..i could be wrong).
So i thought that if ss board is bad...it wont send a signal to the powersupply? Because the powerbutton cable is also going to SS board.I only repair Panasonic plasma tv's! Currently owning a TX-P55VT50 and still searching for a ZT60!Comment
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Re: Panasonic TH-42PZ85E --> Completely dead!
It just acts as a way to route the signal - it doesn't do anything with that signal.
Reduces wiring clutter and harness costs.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Panasonic TH-42PZ85E --> Completely dead!
Ok that explains it. Haha.
So any thoughts on this tv?
Could you check the voltages with your "dead" machine?
Pin 9 is still 0v, i used freeze on every part on the PS, the area around the 5v stb diode was the first to be defrossed.I only repair Panasonic plasma tv's! Currently owning a TX-P55VT50 and still searching for a ZT60!Comment
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Re: Panasonic TH-42PZ85E --> Completely dead!
Ok, what do you want me to check? List the connector and pin numbers and I'll get you the measurements.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Panasonic TH-42PZ85E --> Completely dead!
I use standard 1uF 63V elccy-lytics for the MC boards.....
I believe the multi-layer ones go leaky depriving the chip of supply voltage causing the faults these caps are known for....
Haven't had any issues with those Ive done. They decouple the supply to the chip, so are not critical, anything from say, 0.1 to 10uF would do it .TELEFIX
How PLASMA SCREENS WORK, X-SUS and Y-SUS what they do--
http://www.irf.com/technical-info/appnotes/an-1088.pdf
PLEASE DO NOT EMAIL ME PRIVATELY FOR REPAIR ADVICE. QUESTIONS BELONG ON THE FORUM!Comment
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Re: Panasonic TH-42PZ85E --> Completely dead!
A few posts above are the part numbers with the voltages.
I replaced capacitors D506/507/508. C551 and all small capacitors near p25. 470uf/100uf.
Machine shows no.sign of life..I only repair Panasonic plasma tv's! Currently owning a TX-P55VT50 and still searching for a ZT60!Comment
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Re: Panasonic TH-42PZ85E --> Completely dead!
Could it be that the mainboard is dead? Processor on mainboard is telling the powersupply to turn on right? ( to turn relais on ).I only repair Panasonic plasma tv's! Currently owning a TX-P55VT50 and still searching for a ZT60!Comment
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Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Panasonic TH-42PZ85E --> Completely dead!
Ok , makes sense.
So its the power supply , i replaced almost ALL capacitors except the big 450v and 3 small caps next to the small prints.
Btw i also used a different on/off switch from a other panasonic , does not help.I only repair Panasonic plasma tv's! Currently owning a TX-P55VT50 and still searching for a ZT60!Comment
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Re: Panasonic TH-42PZ85E --> Completely dead!
You need to look at the schematic to see what controls the 5V standby, check if that device is getting a signal to turn on, rather than shot-gun replacing parts which doesn't help anything.
BTW, every time you take apart the power supply, you are screwing all the devices back down, and putting the plastic in right... otherwise you risk a very bad failure...Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: Panasonic TH-42PZ85E --> Completely dead!
I understand , ill try and look at the schematic.
No , not all screws. Right now im just waiting for the relais to give a click. I understand what your saying and ofcourse i wont let the tv stay on without all the cooling placed correctly.
The problem is that it doesnt do ANYTHING at all. So i thought i would use the shotgun tactic and replace some caps , you never know.
The problem must be somewhere on the PB and im honest , i dont have the knowledge yet to get a schematic and just point out the problem
Thanks for the advices your giving me Tom , much appreciated but im not that good with tv's yet as you are!
I only repair Panasonic plasma tv's! Currently owning a TX-P55VT50 and still searching for a ZT60!Comment
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Hi, I disassemble my laptop to replace the speakers, to access them, you have to remove everything including the heat sink and fan, unscrew the motherboard, lift it up a bit to access the speaker wire.
that was not the first time I dissasemble it, i did replace the same speaker a few year ago and I repaste it last year, so I had nothing to worry about. but when I put everything back together, its completely dead.
After a bit of investigating, i found one pin of the status led ribbon cable that was unglued from the cable and bend touching another pin, I bend it back at his place... -
Hello Gurus,
I got a ThinkPad T480s. It was running fine but suddenly started random shut down. When it turned off, I had to push the reset pin to bring it back to life. But it got aggressively worse and became completely dead. No charging light, no life.
I did some initial diagnostics with just the board (no battery, nothing attached, and no CMOS battery as well)
Initial testing of the coil resistance seems to indicate no dead short. The only low resistance I measured was at PL701. It reads 38 ohms.
charger gave - 20V - ok
U101B
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Trying to troubleshoot MSI z490 tomahawk board and would appreciate your help. The board is completely dead and shows no activity when the power button is pressed.
I have tried to look at the Superio, the PSIN signal seems to be correct (goes from 3.3V to 0 on button press) but the voltage on PSOUT pin is quite low. I
t is only 0.8V which seems to be incorrect but goes to 0 when the button is pressed.
Can you please let me know if this is indeed incorrect and what else should I look at next?
Thanks! -
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