Where can I get a vepv0037a display board - Panasonic SC-HT830V System

the problem has to be from the display inverter board. The display inverter board is responsible from bringing display on the screen. Now since is no longer display, then it mean it has become defective.Get a philips screw driver, disassemble the unit in order to get to the display screen. You will see a kind of flex or wire connected to the screen. The board where the wire/flex is coming from into the screen is the display inverter board. The board is rectangular in shape.Remove the board, take it to an electronics parts store within your vicinity for exact replacement and the unit should display again.

please follow this steps and fix it. God bless you

1. Main control board If the display on your microwave has gone out completely this is usually a sign that it is a malfunctioned main control board. To correct the issue the main control board would need to be replaced.
   
2. Display board A display board can either malfunction completely or partially, causing two separate results. If the display on the unit has completely gone out, this can be attributed to either a bad main control board or display board. On the other hand, if the display has only partially gone out, this is usually a sign that the display board is defective and will need to be replaced
   

"Display board is a generic term for a board-shaped material that is rigid and strong enough to stand on its own, and generally used paper or other materials affixed to it. Display board may also be referred to as poster board or posterboard." (Wikipedia)

Yes. Actually most of the display boards you see today, mainly in big cities are electronic display boards: http://www.szabsen.com/commercial-led-project.html?gclid=CIXqiJXigLUCFYVb3god3FsAYg

1) if your display use batteries ,replace by new ones.2)tight the flexible cord from keypanel vs display board3)tight the display board vs lower board( main motor board)4)see if your have 5VDC to display board coming from lower board.5) Test the lower board is coming the power 115 VCA + 5vdc COMING from power supply (transformer+ diodes+capacitor).6) Display board is faulty or Main Board(Lower board). Of course after you did check the step before. See the block diagram that I did for your illustration.Sincerely. Good luck, G-d bless you.
ERNESTO CUADRAMANAGUA,NICARAGUA. C.A

open the key board and replace 20 pin ic( no SN 74 LS 244) on lcd driver board.

May be the grid power to the display. Try shorting across this fuse protector IP1280 (looks like a resistor) on the power board. See more detailed solution I posted in this forum for a similar question.

I think is just the display board next to the cold control.

Try this. Try shorting across this fuse protector IP1280 (looks like a resistor) on the power board. See more detailed solution I posted in this forum for a similar question.

I finally got some time to run this one down. I first took the "easy" solution and just ordered a new display and replaced it. No luck.

I traced the problem to the grid voltage going to the fluorescent display, it is a vacuum tube and requires grid heater voltage. The circuit goes through a switching transistor on the display board (board not available) through the DVD board (circuit wiring only) through a diode and fuse protector on the power board (also not available) to a transformer. The fuse protector was open, but the transformer was not putting out the right voltage. I replaced the transformer and jumpered the fuse protector and that solved the problem. I will need to put something in there for circuit protection as it may be a current limiting fuse protector but the part was not even in the parts.com parts list.

Cause: Temperature and/or voltage surge caused transformer and fuse protector to fail. Transformer rang OK, only display voltage affected.
My Solution: Replace transformer T1150 and Fuse Protector IP1280.

Possible cause of others who replaced the display board: Voltage surge may have taken out switching transistor Q7001 on display board. This transistor is turned on by QR7201 & QR7201 in a Darlington pair when PowerSave goes low. I did not under stand this function since the display is never completely off. It may dim it but I don't recall the display dimming. It may be non function on this model so jumpering E-C on Q7001 might solve the problem for others.

Parts replaced:
T1150 Transformer G4D2A0000216
IP1280 Fuse Protector K5G252AA0003

John