Re: Samsung PN50b550T2FXZA Dead
if you need help let me know it might be a drive I am 65 miles south of charlotte, close to Gaffney sc
if you need help let me know it might be a drive I am 65 miles south of charlotte, close to Gaffney sc
-
-
-
Re: Samsung PN50b550T2FXZA Dead
Refurbished Board arrived and i connected every thing back together , I was able to get the power supply to kick on ,Relay working as designed Green LED displaying on the logic board , However No Samsung sound coming out of the speakers at powering on or Any pictures as of now the set been powered for close to an hour .
Here is my Voltmeter test result at it's location along with my observation:
Some of the reading was taking @ TP at the SMPS for the
VA= 56 V at the SMPS
VSCan at the Ymain fluctuate from 192V ~ 200V But i do not hear the Y main and the Heat sinks are dead cold
VS =208 V @ SMPS
Ve=84 V at the x Sustain board and i can hear it running along the heat sink are warm
So re reading the repair manual that still indicate Main board problem since no pic or sound ....ugh or now i have Y-main as well
MAN i am getting closerLast edited by R1racer; 11-14-2015, 04:49 PM.Comment
-
Re: Samsung PN50b550T2FXZA Dead
some one any oneComment
-
Re: Samsung PN50b550T2FXZA Dead
Ok .. So i bought a supposedly a brand new main board from samsungparts.com . opened the package beat up unsealed box with stickers allover it ( claimed ) contain the main board, The Box had writing on it stating maybe ok and plenty of ???? . Very promising eeh .
Any way to the topic in hand :
I plugged the main board back and i was able to get power, sound and correct voltage at the vscan but no Pic ..
Do you guys think since i see Voltage at the VSCAN located at the Y-main am ok there or should i replace the Y-main even Voltage could be present but something else screwy ... I am not sure how to trouble shoot the Y main to component level .. Or the problem still could be the Main board .
I opened a claim for return with the Samsung parts but not sure where to go from here or should i demand brand new replacementLast edited by R1racer; 11-24-2015, 09:18 AM.Comment
-
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.... -
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,
Iām looking for help with a persistent issue on an LG TV model 55NANO77SRA, which uses the main board EBU66792103 (also used in LG UQ80 and NANO75/NANO80 series).
š§© Problem Summary:- The TV keeps scrolling through the menu or selecting items by itself.
- I removed the physical button board (the entire panel with power and volume buttons) and also disconnected the flat cable (CN202) from the main board.
- The remote control is not in use (batteries removed), and the TV still shows the same behavior.
- I
07-28-2025, 08:34 AM -
When plugged in it will click and cycle the BL on and off, no pic and does not respond to remote. When I disconnect the cable from the PS board to the main board and then plug it in the BL will come on and stay on. There are only two boards in this set, the LVDS cables from the panel driver boards connect directly to the main board. Since the BL comes on and stays on I'm thinking the PS board is ok and the problem is on the main board. Should I order another main board or do I need to do more testing? thanks, Lee -
Hey guys great forum glad to have found it. I bought a Sony XBR 65X900C cheaply because it didn't work. No signs of life at all not even a light/led. All I hear is a brief high voltage sound when I throw the power to it.
Didn't see any obvious signs of damage so right away started checking voltages. This is what I see:
Power Board Connector that goes to Main board
CN6401
Pin 01 NC
Pin 02 NC
Pin 03 "BL_ON": 0V
Pin 04 "N/C"
Pin 05 "STBY 3.3V": 3.5V
Pin 06 "GND": N/C
Pin 07 "AC_OFF"...
Comment