Re: vizio gv47l amber logo no power on.
But I think you're on the right track. .. u11 seems to be a culprit. Good luck.
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Re: vizio gv47l amber logo no power on.
Hi David, I could not find the problem with the main board. I even sent it out to a guy that fixes these boards and he couldn't even find the problem. I ended up Buying a board from eBay for 20$ and Walla. .. got my TV working. . Sorry.
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Re: Philips 37MF321D No power no LED
Here are some pics of the PS....
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Re: Philips 37MF321D No power no LED
I too do not have voltage on pin 4 and 5. I don't believe there needs to be a jumper at 9052. All my caps do look good but I know just because they look good does not mean they are. One thing I do find odd looking at my PS board is solder built up on these pins. Look normal?...
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Re: Sony KDL40S2000
Replaced inverter boards and now working like new.
Thanks for everyone's help.
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AP4593GM Where to buy?
Does any one know of a place to order this MOSFET from here in the USA?
All i could find was from China or overseas.?
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Re: vizio gv47l amber logo no power on.
From 5v to fuse
F1 = 0.0
F2 = 51.4
F3= 0.4
From 12v
All showed 0.0
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Re: vizio gv47l amber logo no power on.
I made a mistake a read wrong fuse layout I wrote fuse 1 and 3 backwards
F1 rated @ 3A = .4OHMs, 0.63 v
F3 rated @ 1.5A = .4OHMs , 5.13v
So I do have a bad fuse that feeds my low read regulators?...
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Re: vizio gv47l amber logo no power on.
I need to test U1 IC 4953GM. What's the best way to do this with a DMM?
'...
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Re: vizio gv47l amber logo no power on.
Bud I might not have explained my post #17 clearly. My fault. Could I not be getting the PSON power because of
This 5vdc is used to power the Processor and the Infrared remote receiver module which will be waiting for the command from the remote control or from the power switch, when the Power on command is received, the Processor will send the turn on signal (3.3~5vdc) to the power supply module (PSON pin) to the switch on the main 5vdc for the rest of the logic and Tuner circuits,
My infrared remote module does...Last edited by Horty24; 09-22-2013, 10:45 AM.
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Re: vizio gv47l amber logo no power on.
Thanks for your help Bud. If you have ideas on what to check next I'm Willing to try.
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Re: vizio gv47l amber logo no power on.
Could it be that my power on board is faulty or not relaying the info to main board?
Reason I ask is that the power,vol,channel,source board does not illuminate or respond once the power is supplied.
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Re: vizio gv47l amber logo no power on.
F1 rated @ 1.5A= .4OHMS, 5.13v at both ends.
F2 rated @ 1.5A= .4OHMS, 5.13v at both ends
F3 rated @ 3A. = .4OHMS. 0.63v at both ends.
Looks like failed fuse at F3?
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Re: vizio gv47l amber logo no power on.
those Three Fuses Marked F1, F2,.F3 All Showed Continuity. Another Post Indicated To Test For OHMS?
7) Power off and unplug lcd. Wait 3 minutes. Then put your multimeter to 200 ohms and measure the resistance of the 2 fuses circled in red. If they are good, both some measure less than 1.0 ohms.Last edited by Horty24; 09-21-2013, 08:05 PM.
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Re: vizio gv47l amber logo no power on.
Here are all the readings of the regulators on the main board. This is with power supplied
All regulators are IN top pin OUT middle pin ADJ bottom pin. Sequence read outs are in this order below.
U4 6IBL 1733L
In 5.11
Out 3.28
Adj. 0.00
U5 AMC117 F0635J
3.28
1.94
.69
U6 6IBL 1733L
5.11
3.28
0.00
U7 6I1L 17-18L
.45
0.0
0.0
U8 6IBL 1733L
.34
.45
0.0
U9 6I1L 17-18L
...Last edited by Horty24; 09-21-2013, 05:53 PM.
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Re: vizio gv47l amber logo no power on.
Ok PSON power off = 00.01v
PSon power supplied = 00.06v
Ill check the voltage regulators now.
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Re: vizio gv47l amber logo no power on.
Lol Ok I'll Check Again. So You Need A DC Reading From PSON with Cable From The Main Board Connected. The Only Thing It's That My Power Button Does Not Try To Turn The TV On. I Don't Even Get The Front Buttons.. Power,Channel,Volume Illuminated. So I May Not Be Able To Get A Reading While Pushing The Power Button.
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Re: vizio gv47l amber logo no power on.
I Removed The Main Board And visually Inspected For Burn Marks Or Bad Solder.
Everything Looks Normal And Clean. I Can Now Troubleshoot With ENM But What Should I Check? Fuse At F1, F2, F3 Are All Good.
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