Picture blinks every few seconds and very faint. Figured power supply. Opened and found connector burnt. Is this worth trying to fix and are cables available? Is it likely power supply is fried, too? Photos attached.
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Re: RCA L40FHD41YX9 power suppy?
The burnt cable runs to the back light converter - any chance it is the back light converter causing the cable problem? -
Re: RCA L40FHD41YX9 power suppy?
You may not find replacement cables and plug. You could remove the connector from the cable and the power supply board and solder the wires direct to the board.Comment
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Re: RCA L40FHD41YX9 power suppy?
Since it blinks a picture
there is a good chance that the power supply is ok and that the wires were causing it to pulse on and off.
Looks like the connectors on a couple of my dell boards.
I also looks like less than half of the pins were actually used, so it may not be too hard to direct wire themLast edited by bammbammfran; 05-26-2014, 07:59 PM.Comment
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Re: RCA L40FHD41YX9 power suppy?
I just found a bad picture but it was enough to show me that the first 5 pins(the burnt ones) are the positive
SO to make things simplest, you can take the first 5 wires and cut them out of the plug, then strip them and twist them together and solder them to the center of the first 5x2 pin area underneath the board,
This should be enough to tell you if everything will workLast edited by bammbammfran; 05-26-2014, 08:40 PM.Comment
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Re: RCA L40FHD41YX9 power suppy?
It's official - I am sorry at soldering! I attempted it. After reconnecting I did get the blue on light and could switch it on and off with the power button, but no picture at all.
I don't mind getting a new power supply, but wonder if I will have the same soldering problem. Is there another answer to the cable - no way to get a new one. The old one really does look like it had a lot of heat - had to scrape to see the copper. New at this cable thing - thanks for any suggestions.Attached FilesComment
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Re: RCA L40FHD41YX9 power suppy?
You've been mighty kind with you thoughts on this TV. I've tried to follow what you said and soldered the wires. Thought it might be the power supply so bought a used one (not sure if it is good). Would you look at the soldering job I did and tell me if this is what you meant?
I like fixing them - this is my 7th TV I've been able to fix - usually by just purchasing a power supply, main board, or T-con board. I usually give them away to friends and family. I hate being beat - great satisfaction in making something broken work again. Thanks for your help and comments. If it is appropriate I would like to send you some money for helping getting it fixed (if it is fixable). PhilAttached FilesComment
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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... -
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... -
I have been working on this concept for quite some time now with limited success but recently I found a switching power supply that is setup for the voltage that this soldering station needs to operate at however it also needs part of the secondary circuit from the original switching power because you need several voltage rails
I once tried to get a ZD-915 desoldering station to work on a 18 volt battery power supply but unfortunately things did not go well but I did find a work around but I might try this idea again but going at a little differently more about this another time... -
The sub developed a constant popping every couple seconds from woofer and power LED flickering with nothing but wall AC connected. Connecting an audio cable didn't change anything. It doesn't play but a second or two of audio in between the pops.
Opened it up and discovered the power supply is making a faint clicking or ticking sound.
I measured the amp's output to the woofer and it pulses up to 50mv DC to be driver. The pulses coincide with the power supply ticking/clicking.
I measured the power supply output going to the amp board and it too has this pulsing. Voltage cycles... -
Hello Everybody,
Trying to repair a power supply from a Russound CA4 Multizone Controller (picture attached)
Russound no longer supports it but were kind enough to provide a schematic of the power supply (pdf attached).
The outputs marked 12v and 20v are all measuring only 1v.
The board is clicking, which I think means it is in something called hiccup mode when the flyback transformers switches because of an internal problem or something else on the board Overloading it.
The capacitors physically look clean (no bludgesor leaks) and...
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