Hi all, i have a issue with this board not knowing how to enter test mode. Please have a look at the pictures. There are no jumpers to short out but holes. What does this mean? Can i put unit into test mode or not?
Attached Files
-
-
Re: Plasma logic board and "Test mode"
Here is the other side.Attached Files -
-
Re: Plasma logic board and "Test mode"
They just cheaped out on putting the pin headers in. Jumper 3-4.------------signature starts here------------
Comment
-
Re: Plasma logic board and "Test mode"
Ok. Let me get this right. I am going to force the power supply on so that Vs and Va appear. Then i am going to disconnect the LVDS cable going to msin board and the power connector going from PSU to main board. Then i am going to bridge out those holes... but know here is the thing. On the silkscreen it says "1,2,3,4 PAL" so i assume that i must short out all 4 pins since we use PAL video system. Then i power up the set snd the video test should commence if alls well with the plasma boards. This tv was damaged by lightning and the main board is stuffed. So now i want to prove that all the other boards are ok before assesing the damage and cost to repair.Comment
-
Re: Plasma logic board and "Test mode"
Pis 1 & 3 are connected together so try 3 & 4 first.Comment
-
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
-
Re: Plasma logic board and "Test mode"
Thanks. I got it to work perfectly. I am glad to say that the y, x main and logic boardsvare all good. Now i can quote with confidence. Its only the main board.
Much appreciated.Comment
-
Re: Plasma logic board and "Test mode"
Glad to hear that.------------signature starts here------------
Comment
-
I hope this is the right forum to post in despite not technically being a repair, but still a question of swapping boards.
I thought I'd explore the possibility to upgrade an existing working Samsung ue55nu7096u with the logic board (and power board if needed) of a newer model (ue55ru7105k) of the same size and appearance (and resolution). The reason being I'd like the extra inputs of that board including component in, an extra HDMI port and bluetooth. Its panel is broken so I have no use for the board otherwise.
The models launched in 2018 and 2019 respectively.... -
Hi all, I just want to share the repair of my 60PK550-UA TV set.
The TV set was powering on, just no image. After verification, nothing wrong on the YSus or ZSus boards. Nothing wrong on the main board either.
But I noticed that the LED was not flashing on the Logic Control Board. This is an EBR63450301. The LED is supposed to flash even with all the flat cables disconnected, with only the power cable attached.
All the voltages measured at the electrolytic capacitors on the board were good. From top left to bottom right:
C57: 3.30V
C61:...07-20-2023, 12:38 AM -
Hi,
I have this board, where I have exchanged the LGA1151 socket. During testing I discovered, that the large PCIEX16 slot won't by no force work in x16 mode, but keeps to work in x8 mode only.
I tested this with GPU-Z, also with Render Test (but tried also Furmark and Heaven Benchmark - no effect).
Tested on Core i5-9600K as well as on an Pentium G5420 and MSI NVIDIA GTX1070 and 2 other cards, including RTX3060Ti.
Board architecture definitely allows x16 mode, as all 16 PCIe lanes are present between CPU and main GPU slot (nearest to CPU).
...05-04-2025, 12:08 PM -
Hi everyone! I'm trying to fix my black screen / failed U8900 GPU v-core on my Mid-2012 Macbook Pro 15" Retinaby doing a rework/reflow of the chip (once I determine that's the real issue; but it likely is).
I've been disabling the GPU in NVRAM for a few years... but it's just time for a better solution.
I'm new to soldering but the only feasible way to fix this issue is to do something myself.
MY QUESTION:
I've been seeing some people (on this forum mostly) run into issues with the logic board needing a serial number or it being deactivated (?)... -
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...
Comment