Just picked up a Phillips 42pfl3603d/f7. Backlights come on but no picture, 12v to TCon both sides of fuse. Any thoughts main board?
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Re: Phillips 42pfl3603d/f7 No Picture
Here are some pictures of the boards.Attached Files -
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Re: Phillips 42pfl3603d/f7 No Picture
I would check the VCC and VCC1.8 test points on the t-con. VCC is likely 3.3V.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
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Re: Phillips 42pfl3603d/f7 No Picture
VCC is .890VDC and VCC1.8 is 0Comment
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Re: Phillips 42pfl3603d/f7 No Picture
Correction VCC1.8 is .543VDCComment
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Re: Phillips 42pfl3603d/f7 No Picture
Both of these are low. Are these voltages supplied by the regulator on the TCON itself?Comment
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Re: Phillips 42pfl3603d/f7 No Picture
They are supplied by that small square chip to the right of the larger LG Philips chip.
Next, check AVDD; this is across the two small capacitors marked C111, C112 near the bottom middle right of the board.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
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Re: Phillips 42pfl3603d/f7 No Picture
11.68vdcComment
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Re: Phillips 42pfl3603d/f7 No Picture
Suspect Bad Tcon?Comment
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Re: Phillips 42pfl3603d/f7 No Picture
Ok I replaced the TCON with a "good" one off of ebay. I now have a picture but it has horizontal flickers as seen in the picture. Most of the research I did still points to a TCON. Do you think this TCON is bad as well?Attached FilesComment
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Re: Phillips 42pfl3603d/f7 No Picture
Possibly a bad board... That's problem with eBayComment
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Re: Phillips 42pfl3603d/f7 No Picture
Ordered a different TCON same problem. Could a bad main board cause this?Comment
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Re: Phillips 42pfl3603d/f7 No Picture
Possibly. A panel problem could also do so.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
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Hi,
I have a VIZIO E70-E3.
Symptoms: Black screen, no picture, but LED backlights are working.
I probed the power board and voltages are as listed on the board.
Main board appears fine, too.
I believe the problem is either a bad T-CON board, or connection to LCD, or bad LCD.
There are two separate ribbon cables feeding the LCD.
If both are connected, the screen is black.
If only the ribbon cable that feeds the right side of the screen (when viewed from the front) is disconnected, the left side of the screen shows picture and... -
hi
i have a samsung lcd tv
it powers on with sound and backlight but no picture
all voltages from PS are good 12v 3.3v and 5v
whats odd is that at the tcon i tested voltage across the fuse on the tcon and i get 0v
i figured main board issue..so i ordered a used main board....when i put replacement main board in i still have same issue
no 12v at the tcon fuse
i disconnect the panel ribbon cables to rule out any panel issues and i still have no 12v at the tcon fuse
the odds of having 2... -
Just bought this for 10 bucks yesterday hoping to fix it. The guy said water dropped inside from a dehumidifier hose and it started showing black and white vertical bars then went blank. When I got it home and turned it on it came on fine and displayed correctly but I was noticing faint vertical bars in the image. After a little bit I turned it off and back on and it was a black screen again. I opened it up to check for water damage and corrosion but didn't find anything of the sort. I cleaned the ribbons anyway and reconnected them but still got a blank screen. If I disconnect the right side... -
Hi guys! I realized you have a lot of knowledge here so i am hoping you could point me in right direction with my odd issue.
The Tv is a Philips 58PUS8545/12, it had no picture but working backlights.
Original T-con:
Opened the Tv and tested to unplug one ribbon cable at a time. With this test i could see that i got fine picture on both halves as long as there was only one ribbon cable connected, with two connected picture were gone.
First replacement T-con:
I thought it might be t-con and ordered new t-con from china(supposedly tested)... -
This was my main TV for the last 6 years. I'm not inclined to throw out a $2600 TV so quickly so I'm trying to investigate the issue.
Problem
TV was disconnected from power for 6 months during construction. When I plugged it yesterday picture was fine, after 30 seconds it dimmed then started developing horizontal lines, picture then starts to ghost vertically until it degrades into vertical streaks. TV always displays a perfect picture when cold. I can unplug TV for 5 minutes and plug it back in and picture is restored for 20 seconds. I can also keep it in standby mode...
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