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Re: RCA no power indicator
I retested with the new meter, and all terminals are showing correct voltages.Comment
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Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
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Re: RCA no power indicator
After checking it again, several times the original readings are correct. All 12 volt terminals show 10 volts and all 5 volt terminals are showing 3 volts. I'm not sure why it keeps giving me different readings but several tests are showing the readings I just mentioned.Comment
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Re: RCA no power indicator
I was confused as to why I keep getting different readings so I had a friend come over (he has a little more experience with electronics than I do) and he tested it for me as well.
He found the same results as I, all 12 Volt terminals show 10 volts and all 5 volt terminals are showing 3 volts.
He was never able to get it to show anything else, we have tried 3 different meters and they are all showing the same thing.
sorry for all this confusion and again thanks for the patience with my inexperience.Comment
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Re: RCA no power indicator
I would say you have a bad power supply. If you want help troubleshooting it will need good pictures of back of board with traces exposedI assume no responsibility for any stupid suggestions I might post.Comment
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Re: RCA no power indicator
More in depth power supply troubleshooting required. Need good straight shot high res of the top and bottom side of that power supply board.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
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Re: RCA no power indicator
Ok, I will post a photo later tonight. Thanks again.Comment
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Re: RCA no power indicator
Attached is the picture of the backside of the Power Board.Attached FilesComment
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Re: RCA no power indicator
I don't see anything obvious, maybe someone with more experience can spot somethingComment
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Re: RCA no power indicator
The PSU should only produce 5VSB with the main board disconnected. Nothing else. You can't get to read any other voltages on the secondary with the main board disconnected, until you supply 5VSB to PSon. Just sayin...
Can we see the component side of the PSU too?
While you are at it, snap a pic from the main board as well and post the model number of the TV.Last edited by CapLeaker; 08-04-2017, 06:37 PM.Comment
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Re: RCA no power indicator
Pic of model no.Attached FilesComment
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Re: RCA no power indicator
RCA LED50B45RQ
http://www.shopjimmy.com/rca-re46hq1...led-board.htm#
RCA RE46HQ1290 Power Supply / LED Board
Please check the DCV at the PS-ON pin to see what it shows when TV is plugged in but the power switch is not activated and when the power switch is activated.
Pictures provided by shopjimmy.Attached FilesNever stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
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Re: RCA no power indicator
now disconnect everything from the PSU and just plug in the PSU by itself. Measure the 5VSB and the PSon pin again.Comment
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Re: RCA no power indicator
Measure the 12V pin also to see if it is showing 10V too.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
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Re: RCA no power indicator
Q12 top right corner section appears to be disintegrated. 2 up from D12 Also a leaking capacitor can pull voltage down. If that transistor is shorted it could be hitting some resistors that are acting like a voltage divider. if the short was to full ground it would be more obvious and easier to find.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 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. 😅
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... -
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