Re: This guy has an RCA 42PA30RQ
same test and it didn't even budge..flat line with humming sound
same test and it didn't even budge..flat line with humming sound
Attached Files
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Re: This guy has an RCA 42PA30RQ
So both Y-main and X-main would appear defective. Can you repeat testing on Y-main with X-main unplugged?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: This guy has an RCA 42PA30RQ
the replacement y-main i purchased had a diode that the original y-main did not have but the board part number and rev all matchedComment
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Re: This guy has an RCA 42PA30RQ
with X-Main disconnectedAttached FilesComment
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Re: This guy has an RCA 42PA30RQ
So... more or less the same. I would try replacing Y-main first. The one you got appears defective.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: This guy has an RCA 42PA30RQ
Great $40 down the drain!!!Comment
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Re: This guy has an RCA 42PA30RQ
There's a light bulb on the PSU near the AC input,,,Do you know what that bulb is meant to be?Comment
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Re: This guy has an RCA 42PA30RQ
It is actually a surge arrestor and shouldn't normally light.
One thing I did not immediately consider was the possibility of the control board being bad.
Can I see a picture of the control board on your TV? I think it's under the main board on this mode.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: This guy has an RCA 42PA30RQ
OK..coming right upComment
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Re: This guy has an RCA 42PA30RQ
kAttached FilesComment
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Re: This guy has an RCA 42PA30RQ
OK, can you check along this connector on each of the points I mark.
Set scope to 100us/div and centre horizontal (press the "HORIZONTAL POS" knob.)
If you see no waveform (more or less straight line), note that.
If you see a waveform, please take a picture or screen capture.Attached FilesPlease 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: This guy has an RCA 42PA30RQ
ok I copyComment
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Re: This guy has an RCA 42PA30RQ
Oh and 2V/div with 1X probe is best scale.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: This guy has an RCA 42PA30RQ
NO waveform ....and how did you do the drawing on the photo?Comment
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Re: This guy has an RCA 42PA30RQ
oh cancel let me set the @V/Div and change probe XComment
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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: This guy has an RCA 42PA30RQ
Ok Tom..looks like I only get waveform when I power up and then it goes flatComment
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Re: This guy has an RCA 42PA30RQ
I suspect the control board.
Have you tried this test?
https://www.badcaps.net/forum/showpo...61&postcount=2Please 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: This guy has an RCA 42PA30RQ
no i haven't but i think your rightComment
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Re: This guy has an RCA 42PA30RQ
let me do that testComment
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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 all!
I'm trying to troubleshoot a Microsoft Surface Pro (5th gen) model 1796 that won't power on. Motherboard model is M1007506-015. My priority is retrieving data, but the SSD is integrated so it looks like if I can't repair it it'll need to go to a data recovery company. I've done a little basic board repair before, but nothing this advanced until now. So please forgive my ignorance in advance. π
I found the boardview for this laptop in the forums here, and am able to open it on my PC with FlexBV.
https://www.badcaps.net/forum/troubl...-hardware-devi... -
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 have a 60 inch Samsung UN60EH6000F flatscreen TV. The screen went black a few months ago Sound is good, backlight is good, no menu. I replaced the TCon board with a used board purchased from Ebay. It worked fine for a 3-4 months, then the screen started βfading' back. Once again, sound is good, backlight is good, no menu. However, this time the picture looks fine for about 10-15 minutes, then fades back. If I power cycle the TV, the display reappears, for another 10-15 minutes, then fades black again. Repeatable ever time.
I ordered a supposedly βnew' Tcon board this time, and... -
I have wanting to do this project for quite sometime now and I finally found a switching power supply that will work on this desoldering gun station ZD-915 that the original switching power supply took a shit and just was not worth trying to fix it because this switching power is not quite big enough to handle the heater element and the vacuum pump
One note when I tested the switching power supply and the voltage control board I noticed that this desoldering gun heat up much faster than the original switching power supply which I was really surprised by to the point that I might buy...
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