I've been trying to repair a neighbor's plasma set. The power supply board LJ44-0068A had bad (leaky) electrolytics 1000uf 250V and 330uF 450V. I replaced them but still bad - hear relay click on remote ON press, no VA or VS supplies. I bought a replacement PS board off ebay. Tried it and still no VS or VA. Discovered a blown F8003 fuse. Replaced it and tried it. R8009 got red hot and cracked. Fuse still good. Now I don't know if the ebay board was bad from the start. Why no VA or VS supply output? Was I supposed to try the new board with loads unplugged first for good VA/VS?
-
-
Re: Dell W4200HD repair
Where is R8009? On power board?
Have you tried powering set up with Y-Main or X-Main unplugged?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. -
Re: Dell W4200HD repair
I had tried the 2nd board completely installed and the resistor fried. I sent that back for a refund. The original board has the new caps and no known bad components but no VA etc. I'm hesitant to try another ps board.Comment
-
Re: Dell W4200HD repair
I bought a 2nd power supply board and it didn't work either. Doesn't output high voltages if targets unplugged. Took the set to a repair center. He tried his power board and same result - no HV. So he says it is the auxilliary smaller PS board but didn't have one to try. I bought one off ebay and it is on its way - but I have my doubts....Comment
-
Re: Dell W4200HD repair
Turns out he was right. So it required both the main power board and the auxiliary to work... Bizarre.Comment
-
Re: Dell W4200HD repair
Glad you got it fixed and thanks for the report.
A working TV? How boring!Originally posted by PeteS in CAComment
-
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... -
Hello,
I'm Working on replacing an Inductor on this Dell's board and I need to come up with a compatible replacement. As much as I would like to smash a comparable 2R2 in the same spot I'd like to confirm the specs before confirming a killed board. For my purposes I'd be happy with a second opinion on the replacement inductor or the actual schematics/board view. As this is a commonly used Dell Rugged in my local service area, schematics would greatly help in the future.
Thank you in advance for any assistance you can render.
Inductor In question. Buzzes like...06-20-2025, 01:21 PM -
I would like to share my experience about charging issues with Dell power supplies with the tech community. I am working on a Dell Inspiron 5590, Mainboard 18778-1 with charging problems. The device can be switched on and works so far, only the message appears at startup:
Alert! The AC power adapter wattage and Type cannot be determined. The battery may not change. The System will adjust the performace to match the power available.
The power supply unit is not recognized in the Bios and the charging process is set to "idle". I use original Dell battery, type... -
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
Comment