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Re: VIZIO M70-C3 Power Supply?
It’s the main board. Specifically the BGA Chips under the heat sink.
This is a known issue as mentioned with a lot of Vizio TVs.Comment
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Re: VIZIO M70-C3 Power Supply?
Ok thanks for the response. I did try heating with a heat gun without taking off the heat sink but I may need to go at it again with taking heat sink off. Might get better results. Thanks againComment
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Re: VIZIO M70-C3 Power Supply?
I am having the same issue. PS_On has 5 volts and there is 34 V going to the LED board. But, TCon ON has 0 Volts and no power to the TCon board. I already replaced the main board and there was no change...exact same symptoms.
While there is power to the LED board, I cannot tell if the backlights are actually on or not. Is it possible a bad LED board will keep the main board from turning on the TCon? Or, is it possible the main board is sensing an error on the TCon board and is therefore not turning it on? Or, is it likely that I received a bad main board that happened to have the exact same issue as my original?Comment
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Re: VIZIO M70-C3 Power Supply?
Where did you buy the main board from? Sounds like they sent you a defective one possiblyComment
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Re: VIZIO M70-C3 Power Supply?
TVPartsToday.com. I will call tomorrow to ask for a replacement. Just thought it was strange that it has the exact same problem as before, and was wondering if it could be something else.Comment
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Re: VIZIO M70-C3 Power Supply?
I may order a new TCon and LED board as well, since they're both relatively inexpensive.Comment
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Re: VIZIO M70-C3 Power Supply?
So, I replaced the main board (again) and the TCon board. I finally got power to the RCon and the backlight turned on. But, now I just have a black screen with a series of vertical white stripes. What does that mean?Comment
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Re: VIZIO M70-C3 Power Supply?
maybe try a firmware update, see if you can get everything paired up.Comment
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Re: VIZIO M70-C3 Power Supply?
replace back original tcon and cross fingers with kisses to pope's photo...Comment
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Re: VIZIO M70-C3 Power Supply?
Try re-seating all cables to the tcon and putting the old tcon back as Davi. P suggestedComment
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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... -
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 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... -
Hi all,
I have a cheap rainbow christmas light set off Amazon which has this little power supply that has a button to change modes. I had a white set with the same power supply that I returned but I can't find any other rainbow themed ones that don't use this setup.
Anyway, the problem is every time you unplug them and then plug them in it reverts back to "Combination" mode which cycles through all these annoying tacky effects instead of going back to what you had selected or at least defaulting to "Steady on" which is what I want. So I'm thinking I can just...
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