Hello all, trying to help out an elderly family member who's Samsung tv image is not very well at all. The picture is like snow falling over the screen very grainy, there is horizontal lines and vertical lines and ghosting of on screen menus, this is not just one source but on any source input and the same with every thing disconnected and just displaying the on screen menus. Have tested the voltages from power supply, all voltages are correct on test points on board and match that of the sticker on back of plasma screen, VS VA VG etc. Have carried out the logic board self test by jumping the pins 3 and 4 whilst connected on board disconnected. Get the test patterns displayed on the screen when switched back on, test pattern shows same symptoms of lines ghosting and grainy snow effect. Now although all this information I found on this site to check so far has been extremely helpful, I could not really find a answer to the question I have. Am I right in saying that the logic board self test if failed concludes the logic board at fault? And am I right in thinking this board is actually called a TCON board? the part number was LJ41-04780A
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Re: Samsung PS42Q96HD image unwatchable
Check the Vsc and Vsch voltages on the Y-main, and the Ve voltage on the X-main.
Vsc = about -200V
Vsch = about +150V
Ve = around 80-120VPlease 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: Samsung PS42Q96HD image unwatchable
As the tv is at family members house I will have to do this one evening and update once done. If the voltages are correct would that indicate the tcon board at fault? Thanks for the helpComment
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Re: Samsung PS42Q96HD image unwatchable
There seems to be smd fuses. One marked f5005 open circuit on y sus board any idea what this one is protecting.Comment
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Re: Samsung PS42Q96HD image unwatchable
i just repaired one of these
it came in with sound no picture replaced the large fets and resistors and diodes as standard on these.... all voltages adjusted and screen was snowy and looked like a tcon fault on an lcd like bad image like fading image retention and blurring
rechecked psu for dry joints all ok
checked y-sus board and found that fuse f5005 was o/c checked all fets all were ok, replaced and all is well up and running
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Re: Samsung PS42Q96HD image unwatchable
Mine worked all spot on after replacing y-sus. My tcon was ok I did check old one after but left new one in as it looked better condition. Every board in mine seemed to have white staining on edges like moisture had got in there.Comment
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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... -
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.... -
Samsung LN46C630K1F – Intermittent Backlight, BN44-00341B Power Board
Summary for TL-DR readers:
• Backlight is intermittent, may come on with TV boot or not. No flickering, never fails during TV on.
• Have obtained Samsung schematic & service documents - Can upload if helpful.
• Have read ALL applicable threads
• C1818 and CP820 replaced as low hanging fruit
• CN802 data taken for normal and failed BL operation. SUMMARY: Pin 2 - 5vDet = 3.52 @normal, 0.0 @BL fail. Pin 6 - EPWM = 1.631 @normal, 1.058 @BL fail.
• VCC pin (18) of PFC... -
This specification for the Samsung Galaxy Book 2 Notebook can be useful for upgrading or repairing a laptop that is not working. As a community we are working through our specifications to add valuable data like the Galaxy Book 2 boardview and Galaxy Book 2 schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet, or download...09-07-2024, 05:50 AM
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