Re: Issue with Samsung UE32D5520 turning on and off
So about 12 off and 2 seconds on, just had a sammy did the same thing, a replacement mainboard fixed it.
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Re: Issue with Samsung UE32D5520 turning on and off
Another image with the indent highlighted in red as it is difficult to see in the photos.Attached FilesLeave a comment:
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Re: Issue with Samsung UE32D5520 turning on and off
Thanks for the response Dick.
In relation to the 68uF 200V that you highlighted, that was one of the capacitors that I replaced in my attempt to correct the issue. I will clean it out and re-solder again as suggested.
In relation to CM858, it looks ok to me except for the top of the capacitor is slightly indented on one side. I have attached photos of the capacitor below.Attached FilesLeave a comment:
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Re: Issue with Samsung UE32D5520 turning on and off
Just a bit more information.
When the main board is connected to the power board I can hear a buzzing/humming noise until the TV turns off. When the main board is disconnected, the backlight stays on and there is no humming/buzzing noise.
Some video examples in case it is helpful.
Video #1 - Video of TV turning on and off
Video #2 - Video of noise when power board and main board are connected
Video #3 - Similar to the above
Video #4 - Video of power board when main board is disconnectedLeave a comment:
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Re: Issue with Samsung UE32D5520 turning on and off
Is CM858 also showing signs of bowing on top?
If you disconnect the power supply from the mainboard and power up do the backlights come on and stay on?
Is the 68uF 200V capacitor connected securely to the other components on that track? One leg looks as though it needs to be soldered again.
You can clean the flux away with alcohol or I believe nail varnish remover if nothing else at hand. No pun intended.Attached FilesLast edited by dick_barton; 02-27-2021, 08:23 AM.Leave a comment:
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Issue with Samsung UE32D5520 turning on and off
Hi,
I'm having an issue with my son's Samsung UE32D5520. The television will turn on and off within 3-5 seconds. The screen starts, I get the Samsung logo, then it goes black and off. I have replaced 3 capacitors (2 x 16V 1000uF and 1 x 200V 68uF) on the power board (BN44-04660A) as a shot in the dark after reading some information online.
From opening up the television and inspecting the power board there is a humming/buzzing noise coming from the board although it's difficult to pinpoint exactly where this is coming from.
I enclose pictures of the board below and excuse the slight burn mark on the reverse of the board which happened when I was replacing one of the capacitors
Any tips or suggestions or am I better off just buying a replacement PSU or a new TV?Attached Files -
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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... -
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... -
After installing Linux, I can no longer enter the BIOS of my Samsung Series 9 (NP900X3C) laptop. When pressing [F2] during boot I simply get a black screen. Same thing when pressing [F10] and choosing "Setup" from the "App Menu" tab. Apparently this is a relatively common issue with Samsung laptops of that generation, but unfortunately i haven't been able to resolve the issue (yet).
Things i've tried so far; reinstalled Windows 10, checked for redundant boot entries, tried to factory reset using the emergency keyhole, attempted to clear the NVRAM by physically...Yesterday, 09:15 AM -
Hi,
I have confirmed that I have a mainboard problem.
I have tracked no hardware issued on board so might be a software dump required.
I have searched a bit but wasn't able to find anything for my screen:
Here are some more details:
Panel: cy-nn065hgev1h
Main: BN94-14180M P08F
Your help much appreciated!
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