I have 3.3 volt standby on the flowers Provo power supply board until I plug it into the main board but then it fluctuates the point .3 to.5 please help
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Re: Sony XBR 55 x800e
What's the resistance to ground on the 3.3v pin on the mainboard?
Decent photos always help. I suspect a shorted component, possibly a capacitor. -
Re: Sony XBR 55 x800e
If you have about an 8Ω ~ 10Ω 1watt resistor, disconnect the main board and connect it between the power supply 3.3vstby and ground and see if the 3.3v stays up.
This should tell you if the power supply is providing enough current or if the main board is loading it down.Comment
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Re: Sony XBR 55 x800e
This I what I have video attachedComment
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Re: Sony XBR 55 x800e
I disconnected the main board from the power board and when I test the rating on a standby voltage it is still the same as when it is plugged inComment
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Re: Sony XBR 55 x800e
This with main board connectedAttached FilesComment
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Re: Sony XBR 55 x800e
This is with that main board no connectedAttached FilesComment
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Re: Sony XBR 55 x800e
I’d say first off we need straight shot high resolution pictures of your PSU and the main board. Then do that what already has been asked.Comment
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Re: Sony XBR 55 x800e
Where am I looking for the 8Ω ~ 10Ω 1watt resistor? I'm new at this.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... -
Hey guys great forum glad to have found it. I bought a Sony XBR 65X900C cheaply because it didn't work. No signs of life at all not even a light/led. All I hear is a brief high voltage sound when I throw the power to it.
Didn't see any obvious signs of damage so right away started checking voltages. This is what I see:
Power Board Connector that goes to Main board
CN6401
Pin 01 NC
Pin 02 NC
Pin 03 "BL_ON": 0V
Pin 04 "N/C"
Pin 05 "STBY 3.3V": 3.5V
Pin 06 "GND": N/C
Pin 07 "AC_OFF"... -
All left and right refers to looking from rear of TV (or looking from front with TV upside down)- TV came with vertical bars and no image. Found faulty TVS on left buffer board. Also replaced T-Con (may have damaged the original while hot air removing components, board has slight warp) and have full image but few horizontal lines on the screen. Some of the lines appears to be 2 pixel tall while others are 1 pixel tall.
- Disconnecting left and right buffer board potentially reveals problems on both sides with different signals (unless this T-Con require jumper like Samsung FB_TRDY1&3) Fault
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Hi everyone, newcomer in this forum, i watched tons of video from Sorin, i like the way i calmly explain things, i did quite some console repair, i am not that bad at micro-soldering, but troubleshooting where the issue is, is definitely where i still have progress to make. Usually i was able to fix the console because the failure was obvious, or because i was able to find someone with similar measures on the board and was pinpointing what to replace that way.
Nevertheless, let's say, i don't come as a total beginner.
I have this old laptop, which suit perfectly my needs, with the...
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