Whadaya think?
Attached Files
-
-
Re: LN32D403E4DXZA Bad Panel?
Yep, seen it before... panel gone... possibly something on that t-con bonded at top/bottom of panel - someone on here was fiddling with it and was able to freeze and it worked briefly, but panel died shortly afterwards.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: LN32D403E4DXZA Bad Panel?
I know this is an old thread, but I have the same tv. My issue is no picture. The backlights are working. I can see them shining through the holes on the back panel. I have sound, the led indicator light works. The tv makes the usual samsung jingle when turn on and turn off. I took the back off and looked for bulging caps or burned marks, but there are no signs of damaged parts. I have not checked any voltages from the power supply yet, but I intend too when I get time. I located the PS, backlight inverter, and main board, but I did not see the T CON board? There is a ribbon cable running to the base of the tv, so I assume its located there, but not sure how to access it. Any help advice is welcome. ThanksComment
-
Re: LN32D403E4DXZA Bad Panel?
Please post some clear pictures of the back of the set with the cover off and the area where the ribbon cable runs.Comment
-
Re: LN32D403E4DXZA Bad Panel?
Here are some pics, sorry for the late reply.Attached FilesComment
-
-
Re: LN32D403E4DXZA Bad Panel?
Bump. Anybody have knowledge of this TV?Comment
-
Re: LN32D403E4DXZA Bad Panel?
I believe the T CON is built into the panel on this model. I would first check fuses on the panel boards. so you really should get some power supply readings before going any furtherDid I leave the soldering iron on?Comment
-
Re: LN32D403E4DXZA Bad Panel?
OK, will do.Comment
-
Re: LN32D403E4DXZA Bad Panel?
Also upload good clear pictures around that LVDS connector on the main board, and also the straight shot picture of the whole main board, to see if it has any SMD fuse around that area since part of the T-CON circuit may also be on the main board.Last edited by budm; 02-10-2015, 07:59 PM.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
-
Re: LN32D403E4DXZA Bad Panel?
Here are pics of the main and power supply.Attached FilesComment
-
-
49UJ6500 LCD panel has a lighter band on top when first powered on. Goes away (or gets much fainter) after TV on for a few min. After powered off for awhile and power back on, same band appears. If powered on immediately after powering off, no or much fainter band. Running the latest firmware.
Disassembled the TV and lifted the LCD panel during testing. Band is on the LCD panel (can see the band on the panel as I lift it slightly) Backlight is perfectly even at the top edge. Double checked LCD panel alignment in the frame and is perfect but since band moved with the panel, its on... -
TV flashes backlight then reboots over and over. no image. Client said it used to have image for a bit before rebooting. Got worse over time.
tcon is built into mainboard.
Only one cable goes to panel boards.
there is a cable from one panel board to the other that links them.
cost cutting measure that results in us having harder time to diagnose.
removing the link to the second panel board allows TV to stay on with stable backlight but no image.
used cut off tape method to mask 1 maybe 2 pins on the side of the cable that goes to that second panel board.... -
I had a the above tv qn55q60r that had a bad panel but everything else good. I had another panel here from un55nu6900 with bad leds and melted diffusers.
I put the nu6900 panel in and powered it up and it does work but there are lines vertical lines.
I was trying to change the panel type in the service menu but don’t see my exact panel. Anyway to fix this or someone have similar experience.
the clear picture is the panel type from the service menus on the nu6900. The other 1 is the panel type that was set for the q60r with the bad panel....01-13-2024, 01:57 PM -
I have a TCL 55P6US with sound and backlight but no picture. This model does not have a T-CON board, and the right (rear perspective) panel board is fed from the left panel board. I have not been able to induce any change by disconnecting the secondary panel board or the tape cut-off method on the primary board.
There are a bunch of voltages missing on the panel boards. I can't find any shorted caps of the panel boards, and all of the missing voltage rails read in the kiloohms, which leads me to suspect the issue may lie on the circuit board, rather than a short in the panel.
... -
- Prior owner tried a replacement main board. No difference.
- Samsung 2x red blinking standby LED = panel fault
- Jumpered FB_TRDY_1 (pin 1 CN1300 left. main tcon->left side buffer boards) and FB_TRDY_3 (pin 95 CN1301 right. main tcon->right side buffer boards) This allows testing individual T-Con (on main board) connection to panel on this Samsung. Found fault on left side (viewing from rear of TV)
- Each side has 2 buffer boards, disconnected left side flex between 2 buffer boards. Fault is on the left most board.
- Tape masking eventually isolated to CN1300 pin 15 (CKV4_GOA) Display
Comment