Re: MPF6908 No 5V on pin 6 to A Board
Is this the one you mean Sir?
Is this the one you mean Sir?
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39 Soldering Iron burns And Counting
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Re: MPF6908 No 5V on pin 6 to A Board
4.80K Ohms one way ad open the other other way, if we are talking about this chip, Is this a digital Mosfet?39 Soldering Iron burns And CountingComment
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Re: MPF6908 No 5V on pin 6 to A Board
It is just a diode for the negative power supply section. So it is OK.
You should try new startup/running cap I mention in the earlier post next.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
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Re: MPF6908 No 5V on pin 6 to A Board
will do, Thank you39 Soldering Iron burns And CountingComment
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Re: MPF6908 No 5V on pin 6 to A Board
replaced C117 cap today, still same erradic reading on all pins of IC101, thinking bad IC101? won't start? what do you think next step is. Thank youLast edited by LITEZONER; 09-19-2015, 06:38 PM.39 Soldering Iron burns And CountingComment
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Re: MPF6908 No 5V on pin 6 to A Board
stay with me budm, need your help brother. thank you.39 Soldering Iron burns And CountingComment
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Re: MPF6908 No 5V on pin 6 to A Board
In the datasheet I see it says recommended Vcc is 10V min, Typ 18V, max 28V
Is this TV being tested with the Sc and SS boards connected? either of those shorted can may present a No LED, No blink. Might be worth checking just in case
I'm not sure if this info applies to US models, you don't have green LED on start up, just red.Attached FilesComment
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Re: MPF6908 No 5V on pin 6 to A Board
Testing bare board, no standby 5V at pin 639 Soldering Iron burns And CountingComment
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Re: MPF6908 No 5V on pin 6 to A Board
I am having the same problem with my power board there is no dc volts at c102. i get 5 v and it fluctuates but when i remove the ic101 the voltage slowly increasesComment
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Re: MPF6908 No 5V on pin 6 to A Board
Hi can i get help to fix my panasonic p50x30k
My tv dont have power and light
And no standby volt also
When i press relay oo2 then i have 5v standbyComment
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Re: MPF6908 No 5V on pin 6 to A Board
Can you start a new post with model number, pictures of you circuit boards and voltages at the connectors.Willing to help but I'm no expert.Comment
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Re: MPF6908 No 5V on pin 6 to A Board
Thanks Willing
I m new here not so familiar with this website to start new postComment
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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... -
Hi everyone,
Im looking for some advice regarding my Samsung UE55MU8000 TV with main board model BN94-11606C. The TV suddenly stopped turning on and now shows no signs of life at all not even the standby light at the bottom.
Initially, I suspected an issue with the PSU, so I took it to a repair center. They tested it and confirmed that the PSU works perfectly, even on other TVs. Based on that, I started investigating the main board.
I disconnected the main board from the PSU, and the backlight turned on, which seems to confirm the main board is the issue.... -
Customer plugged in samsung monitor into the board and used it as a power supply, killed UG800 and UG400. I replaced those two with an exact donor board we had In stock and working, board pulls 5volts and then gets like 2.89 amps on the left side. The singular port is the port that failed. Used a perfectly working chips from donor (board was locked) Now I only get 5volts 0 amps on that power and then 20volts 0 amps on the two left side ports, I checked for DFU and nope nothing, computer not turning on. No shorts present anymore. I am confused as I used the exact components from an identical...
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Customer plugged in samsung monitor into the board and used it as a power supply, killed UG800 and UG400. I replaced those two with an exact donor board we had In stock and working, board pulls 5volts and then gets like 2.89 amps on the left side. The singular port is the port that failed. Used a perfectly working chips from donor (board was locked) Now I only get 5volts 0 amps on that power and then 20volts 0 amps on the two left side ports, I checked for DFU and nope nothing, computer not turning on. No shorts present anymore. I am confused as I used the exact components from an identical...09-10-2025, 03:15 PM
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Originally the tv arrived with dimmed backlights (not failed leds) but everything else worked ok. Adjusting backlight in menu did nothing but voltage changed on dimming control pins,
0% p_dim at 1.65v and a_dim at 1v
50% p_dim at 3.3v and a_dim at 1.65v
100% p_dim at 3.3v and a_dim at 2.88v
Changed backlight leds anyway as always like to have complete peace of mind they wont fail shortly after selling the tv. No change as expected!
Leds are 2 rows of 15 6v leds.
On inspection of the power board found diode MBR3200 shorted so replaced with...
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