Re: Visio E470VL won't power on.
I found an original power board on ebay and installed it, and all working again. Thanks for all the help guys.
RichWeber
Member
Last Activity: 08-31-2022, 02:33 PM
Joined: 11-15-2013
Location: Port Orchard, WA
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Re: E470VL Power Board Replacement/Substitute
Nevermind. I found one on ebay.Leave a comment:
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E470VL Power Board Replacement/Substitute
Hi Guys.
I have done some troubleshooting in another thread, and attempted a repair that did not work. So now I'm to the point that I need to replace the power board.
Problem is, I cannot find a power board from a reputable source that is in stock. I'm not sure if it's made anymore or not. My board is part number 3PCGC10016a-R. Manufacturer part number 0500-0412-1000. Everywhere I look it is out of stock.
[url]http://www.shopjimmy.com/vizio-0500-0412-1000-power-supply-unit.htm[/url]
I have found another board that is part number 3PCGC10016c-R... -
Re: Visio E470VL won't power on.
Hi Tom. Quick Question. I cannot find a power board from a reputable source that is in stock. I'm not sure if it's made anymore or not. My board is part number 3PCGC10016a-R. I have found another board that is part number 3PCGC10016c-R The pinouts are pretty much the same. The only difference is, that on the power out to the main board the pins that are 5v on my board are 5.2v on the 3PCGC10016c-R. Otherwise everything looks the same. They layout is exactly the same as my board. Would that board be suitable? I have compared the boards at [url]ww...Leave a comment:
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Re: Visio E470VL won't power on.
No love. ripped out the old parts, soldered in the new ones... Still won't turn on. Think I'll just buy a board.Leave a comment:
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Re: Visio E470VL won't power on.
No problem. I ordered it. We'll see how it turns out. If not, it's the only one that they had in stock so it'll have to do. Can't hurt to try for 2.50 total.Last edited by RichWeber; 11-24-2013, 04:38 PM.Leave a comment:
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Re: Visio E470VL won't power on.
Correction 50v. (old eyes)...Leave a comment:
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Re: Visio E470VL won't power on.
Alright, so I just had time to verify this.. rough week. I pulled the heatsink off that part, and stuck a probe across pins 2/3 and it read 4.45v solid. At first I saw it jumping around, but turned out I just wasn't really making solid contact with one of the pins.
So I'm going to jump on digikey and order up one Q0465r, and a couple 5v caps. One 47uf, and the other 22uf.
but do you think I fried it myself when testing, as I explained above, and there's actually another problem?
Also they only have one q0465r...Last edited by RichWeber; 11-23-2013, 05:46 PM.Leave a comment:
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Re: Visio E470VL won't power on.
and? ... AND??? You can't leave me in suspense like that!! haha.
Seriously, though.. Yeah, it seemed pretty steady. I'll check it one more time to be sure, but it was tricky.
I should mention that the first time I tested it, and was testing the wrong probes and got a zero reading, after unplugging it, I did get a tiny zap when pulling the probe away. I didn't think I touched anything, but there was a definite spark.
Was this just the cap discharging? Could I have fried that controller?Leave a comment:
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Re: Visio E470VL won't power on.
DC still?
I can't even get a probe to pin 3. They are too fat. :-/
Edit: I was able to unplug it and work the pins apart a tiny bit.. enough to get a probe in there... Correction. Originally I reported 0 volts. I was measuring the wrong pins. Pins 2 and 3 were 4.45 volts. Measuring DC.Last edited by RichWeber; 11-17-2013, 08:42 PM.Leave a comment:
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Re: Visio E470VL won't power on.
The transistor? My eyes aren't perfect, probably could use a magnifying glass, but it appears to say.
DK43
Q0465R
Edit: On closer inspection, that's not a transistor at all. It's got 5 legs instead of 3.Last edited by RichWeber; 11-17-2013, 07:11 PM.Leave a comment:
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Re: Visio E470VL won't power on.
Whoops, OK. On the red points - I measured across them. I had my multimeter set to ACV, and it just didn't know what to make of it. I measured it in DC and I got 166v, which is pretty close to what you predicted, so I'm assuming that's what I was supposed to be doing?
For the caps (blue), on one I got 4.45v, on the other I got 33v. Measured DC as directed.
...
Last edited by RichWeber; 11-17-2013, 01:51 PM.Leave a comment:
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Re: Visio E470VL won't power on.
Yes, I've tested the input fuse. It read 0 ohms resistance, and when power is plugged in I tested 120v on it's output. Ok, I got ~70v (not 170) on both the red spots. The center legs read .3v, and full 120, incase you are interested. ~60v dc on both the blue....Last edited by RichWeber; 11-17-2013, 12:37 AM.Leave a comment:
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Re: Visio E470VL won't power on.
I'm all ears! If I can save a buck, I'm all for it!...Leave a comment:
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Re: Visio E470VL won't power on.
Nothing beyond simple repairs, and no formal training. I can solder and replace components and test a little to find a bad part, but I couldn't design a circuit to save my life. I have no idea how to check the stage of my power. I know a little about simple components and what they do, but that's about it.
I did find a transformer that has power to one side, but nothing on the other.. That seemed strange to me. It's the one with the yellow tape across the top sort of close to the power outs.
I don't...Leave a comment:
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Re: Visio E470VL won't power on.
Confirmed. 0 volts on all outputs. Can't figure out which component failed without a circuit diagram, I don't think, but I get 71 volts at most of the transistor blocks, and pieces of jumper wire that I tested, and 34 volts at another transistor block, but there's no power to the transformers for the backlight, or the lcd, and no power at the outputs. Seems like maybe a smoothing cap shared by the various outputs failed, even though they all appear fine. I've pulled the board and looked at solder joints, and they look ok.
...Leave a comment:
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Re: Visio E470VL won't power on.
I'll go back and check again with it plugged in. And no, I didn't measure all the outs. I can check the backlight power out, and the LCD power out. I see those. Not sure what TCON is, and I think the sound board is integrated to the main board. Thanks for your help guys.Leave a comment:
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Re: Visio E470VL won't power on.
Yes, sorry. Going back and reading that it's not exactly clear. I disconnected the power out cable that goes from the power board to the main board, and measured at the posts of the power board. All voltages were 0. I did NOT disconnect the power in to the power board, and then try to measure voltages... LOL. Power in voltages were 120v at the fuse.
I then plugged the power out cable back into the power board, hit the on/off button and tested the other side at the metal legs of the socket of the power in on the main board. All zero...Last edited by RichWeber; 11-16-2013, 04:36 PM.Leave a comment:
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Re: Visio E470VL won't power on.
I have tested voltage at all of the 5v, an 12v terminals at the power out from the power board. I pulled the cable and tested voltage to do this.. All read zero volts. I am grounding via the chassis just as I was before. I have tested voltage at the on/off, also 0 volts. in fact, everything was 0 volts at power out. I plugged it back in and hit the power button and nothing. I tested anyway at the other end of the cable, and same thing.. zero volts everywhere. I am using an auto ranging digital multimeter. I have a manual range one that I can try,...Last edited by RichWeber; 11-16-2013, 04:14 PM.Leave a comment:
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Re: Visio E470VL won't power on.
Here is the actual board that is in my TV.
Tried to take it a couple different time with different settings. Unfortunately there is some shadow in there that I don't like, but it's still pretty good, high resolution....Leave a comment:
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