Re: pn64e550d1fxzc power issue
Each capacitor has one leg soldered on the top of the board as well as all on the bottom.
Each capacitor has one leg soldered on the top of the board as well as all on the bottom.
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Re: pn64e550d1fxzc power issue
Flood the pad with fresh solder and use desolder braid to remove the fresh solder. Fresh solder tends to be easier to remove.Attached FilesLast edited by dick_barton; 12-31-2020, 04:53 AM.Willing to help but I'm no expert.Comment
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Re: pn64e550d1fxzc power issue
got it changed still wont power on does the top need to be soldered to as i only soldered the bottom thanksAttached FilesComment
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Re: pn64e550d1fxzc power issue
tv use to work then would tutn off and wouldnt power back on for a while . i took apart and touched up solder joints then no power at all. then changed those caps on the y sustain and tried last night no standby i checked fuses on power supply and there goodComment
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Re: pn64e550d1fxzc power issue
i just put solder on the top side of the caps as well and touched up the solder joints on the power supply powered on after a few times of hitting the button then died and wint do anything green light was blinking on control board and everything stopped when it went outComment
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Re: pn64e550d1fxzc power issue
Try running the test patterns.Comment
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Re: pn64e550d1fxzc power issue
How do I do that? and currently i cant get the red light or it to turn on or the green light on the control boardLast edited by pansatdishman; 02-25-2021, 02:05 PM.Comment
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Re: pn64e550d1fxzc power issue
On that model, you disconnect the cable from the power supply and put a wire in the ps on and the other end to the ground. Then on the mainboard, put a wire in holes 3 and 4. Then plug in the tv.Comment
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Re: pn64e550d1fxzc power issue
which one the plug going from the power supply to the mainboard? thanksAttached FilesComment
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Re: pn64e550d1fxzc power issue
The instructions given by tvjimmy are shown in the attached pdf in post #2Last edited by dick_barton; 02-25-2021, 05:18 PM.Willing to help but I'm no expert.Comment
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Re: pn64e550d1fxzc power issue
okay i have the mainboard to ps supply mainboard connector unplugged and connected to pins 1 and 3 tried plugging tv in and nothing happened. i have to short 3 and 4 on the mainboard? where is 3 and 4 or i add another wire to the same connector on 3 and 4 thanksAttached FilesComment
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Re: pn64e550d1fxzc power issue
tried this and still cant get test patterns. do i have the clip in the right spot on the logic board as mines a bit different then the pic in the pdf thanksAttached FilesComment
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Re: pn64e550d1fxzc power issue
These are the holes. I hope you didnt do any damage to that chip.
The top 2 holes should be #3&4.Attached FilesComment
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Re: pn64e550d1fxzc power issue
thanks tried it and still nothing. so that means i have a power supply issue? thanks doesnt try to power on no noise or anythingComment
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Re: pn64e550d1fxzc power issue
That's how I had it.Attached FilesComment
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Re: pn64e550d1fxzc power issue
The number of the holes is:
3 4
1 2
Put the jumper in the two top holes.Comment
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Re: pn64e550d1fxzc power issue
Thanks I used a bread tie for holes 3 and 4 and plugged the tv in and it still doesn't turn on. Power supply issues? ThanksComment
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Re: pn64e550d1fxzc power issue
what should i try next thanks?Comment
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Hi all,
TL;DR - this laptop is driving me nuts with the oddball power-related behaviors. Appreciate any insight you can provide!
I'm experiencing a power issue on an Asus Probook P5440UF-XB74. Although I've worked with electronics and computers for decades, this is my first attempt at getting into motherboard-level component troubleshooting. Any help the community can provide is greatly appreciated!
A few weeks ago I was using the laptop (on battery power) for a Zoom meeting. The battery was running very low (long meeting) but I wasn't worried about... -
I am seeking guidance on an Acer Spin 1 SP111-33 that does not turn on when pressing the power button.
Below are the observations and troubleshooting steps I have taken so far: Observations and Tests:- Verified that all critical voltages are present:
- 3.3V and 5V are always present if DC is plugged.
- 1.8V on the BIOS chip is present.
- Checked the power button functionality:
- When pressed, the voltage drops to 0V, indicating the button is functional.
- Inspected the flex cable connecting the USB, audio, and power button to JUB1:
- Confirmed connectivity is intact, ruling out issues
11-26-2024, 12:39 AM - Verified that all critical voltages are present:
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hi guys, my motherboard will not start no matter what
when connected to ac power, the battery does get charge, led indicator glows red when discharged and turns white as it is fully charged.
but rest nothing happens no sign of life.
this laptop has one preexisting usbc power issue - so i use DCIN jack for charging my laptop.
with this issue my laptop was unable to power ON only sometimes i just had to wait some time.
but now nothing happens no matter how much i wait/ charge/ press and hold power button.
i have no knowledge of motherboards ....10-20-2024, 02:48 PM -
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... -
This one's a weird one, and still unsolved despite it having gone back to Dell once.
Specs
i7-8750H, GTX 1060 Max Q, 500GB SSD & Seagate 7mm 1TB HDD. 17.3 IPS screen. This has the fingerprint reader in the power button.
Backstory
I bought this from eBay, from a wallpapering shop. £650 in 2020 which was a good price considering it's a gaming laptop. Physically it's in perfect shape, apart from the hinge mounts on the palmrest failing in the time I've had it (I have a new palmrest for it). The usual thin plastic crap modern build quality!...10-23-2023, 04:09 PM
Comment