Re: Magnavox 32ME303V/F7
I apologize for the time in responding.
I did as instructed and got nothing the red led is still on but nothing when try to power on. I used the 1k 1/4w from BL to the 3.3 v
Does this mean that the power supply is bad?
alja
DIY Junky
Last Activity: 11-21-2016, 08:39 PM
Joined: 08-15-2013
Location: Boca Raton
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Re: Magnavox 32ME303V/F7
Thank you ron350, Just to clarify before doing anything stupid. I am going to unsolder the south end of the J169 (BL-SW) and hook up a 1K 1/4W resistor from the unsoldered end to an end of the J170 (3.3V) then energize and power on right?
Does the resistor have a way to solder it like polarity?Last edited by alja; 11-28-2015, 07:10 PM.Leave a comment:
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Re: Magnavox 32ME303V/F7
Please forgive my ignorance and thank you for your patience but how could I disconnect the BL-ON as I understand it goes through the flex from the PS to the Main Board, right? That means I would have to cut the flex? if so How could Identify which part of the flex is the BL-ONLeave a comment:
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Re: Magnavox 32ME303V/F7
So if I understand right the main board is bad? Is it in some how fixable?
I did test the BL-ON While pushing the power button and no change whatsoever in the voltage.
I also measure the pins that come from the power supply to the main board and found some with 21v others with 0v and others with 3.3v I don't know if it is relevant but I just did.Leave a comment:
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Re: Magnavox 32ME303V/F7
I don't really know what this means....
...
Leave a comment:
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Re: Magnavox 32ME303V/F7
I've checked all the labels and the values are accordingly where says 13v there is 12.98 where says 21v is 21v but only the one you pointed out to me to check, the one next to the connector to the logic board that says "P ON +21v" (J180) is not showing me the 21v the rest of the 21v labels read indeed 21v. I also found the 3.3v where it should be.
Also there is a humming comming from the transformer everytime I energize the board.
And before the tv died it was hard to turn it on but eventually it would until no more.Last edited by alja; 11-28-2015, 10:51 AM.Leave a comment:
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Re: Magnavox 32ME303V/F7
Thanks Budm. here the values
P-ON +21V= -0
ALL 3.3V = 3.3
BL-SW = 0
PROTECT3 = 0.6
AMP+13V = 13
ADIM P = -0Leave a comment:
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Re: Magnavox 32ME303V/F7
ron350 I tried but I don't really know what to look for, I measure the ones that says 21v and 3.3 but don't know what else to do.
I forgot to mention that the big capacitor of 330 uF reads 297 uF .... I guess this is not ok? but would it be the culprit?Leave a comment:
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Re: Magnavox 32ME303V/F7
Thank you CapLeaker, I did what you instructed me and here the values
The power button seems to do nothing, the values don't change when I press the button.
from bottom to top there are 11 pairs and measured
00.0 - 00.0
00.6 - 03.3
00.0 - 03.3
00.0 - 03.3
00.0 - 00.0
00.0 - 00.0
00.0 - 00.0
12.9 - 12.9
12.9 - 12.9
00.0 - 21.0
21.0 - 21.0Leave a comment:
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Re: Magnavox 32ME303V/F7
Well that is exactly my problem that I cannot find where to measure those 5V...Leave a comment:
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Re: Magnavox 32ME303V/F7
The ones on top of the transformer from left to right are the ones that don't give me OL
0,28 - 2.8
the ones at the bottom right of the transformer give me
OL - 2,4
OL - 2
OL - 2,5
OL - 1,9...Leave a comment:
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Re: Magnavox 32ME303V/F7
I've tried to test the diodes on the power supply board but I'm not sure if they are right. A site that I looked on said that the diodes should give me a reading only one way and the other way should be OL so some of them were giving me readings both ways .... that means those are bad? how could I know the correct reading I should get from the diodes. I don't really know what I am looking for but it's a start.
This power supply is totally different from the ones I've seen before because I cannot find voltages to measure ... so I don't even know if...Leave a comment:
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Re: Magnavox 32ME303V/F7
I do have a digital multi meter but I'm not sure how to look for the S/CLeave a comment:
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Magnavox 32ME303V/F7
Hello, here again kindly asking for help to fix this tv
Model: 32ME303V/F7
Brand : Magnavox
Problem: Steady Stand by light. No sound, no picture.
Pictures as follow from the back of the TV.
Thanks in advance for the help. It's been quite a long time since I don't dive into electronics but last TV I was guided on was a Success so I'm fast learning and follow directions accordingly
[ATTACH]123350[/ATTACH]
[ATTACH]123351[/ATTACH]
[ATTACH]123352[/ATTACH]
[ATTACH]123353[/ATTACH]... -
Re: Vizio VO320E Bad Power Supply Board?
Just for reference...., I got the diode, replaced it and is working good!
thanksLeave a comment:
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Re: Vizio VO320E Bad Power Supply Board?
Thanks Caleb, you are right I found that the second number has to do with the manufactured date. Ordering ......;-)Leave a comment:
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Re: Vizio VO320E Bad Power Supply Board?
I just pulled out the diode and the reference is MUR460 / 937 but I cannot find the 937 is there any way to replace it how can I choose the correct one?
And off course you were right, after pulling out the diode I test the other one and gave me 425Leave a comment:
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Re: Vizio VO320E Bad Power Supply Board?
Thank very much Tom, I really appreciate your time and patience, I will post results once I get the new one in.
Again,
ThanksLeave a comment:
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Re: Vizio VO320E Bad Power Supply Board?
wait, I measure the other diode that is next to this one the D802 and gave me the same reading both way, .001 starts at 500 but ends at .001, is it bad too? so I need to replace it?Leave a comment:
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Re: Vizio VO320E Bad Power Supply Board?
The reading is the same in both ways 0.01. board unplugged from the outlet and other boardsLeave a comment:
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