I have been trying to resurrect a 37" Planar LCD I picked up for the local landfill and narrowed my problem down to an open transformer on the inverter board. I have tried searching for a supplier but have come up empty except for 1 used parts dealer in china.
The board number is vit70004 60-1 and the tranformer says t51. 0040. 211 Z1 underneath it says: 0608 03 4k. Anyone with any input as to were to find these? Thanks
avaktech
Senior Member
Last Activity: 03-15-2017, 08:55 PM
Joined: 01-21-2012
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Source for vit70004 60-1 transformers?
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Re: Sony KDL-37m400 Relay Click...... Nothing
Pulled and tested the diode off the board and it tested fine. I replaced it anyways and I still have the same problem. Can anyone enlighten me as to what makes a diode test bad in circuit? -
Re: Sony KDL-37m400 Relay Click...... Nothing
So I flipped the power board as per Selldoors request to get a pic and figured I'd check out a few of the diodes for integrity and what do you know I found a bad one!
Selldoor, thanks for being patient with me. I'm trying to learn as I go but I am easily distracted.
So included are a pic of the inverter board, backside of power board and a close-up of the offending diode. Now, how the heck am I supposed to fix this tiny little diode and how will I figure out what direction to put it in?...Leave a comment:
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Re: Sony KDL-37m400 Relay Click...... Nothing
I guess I should also include that I have 2 blinks after the set turns off.Leave a comment:
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Re: Sony KDL-37m400 Relay Click...... Nothing
Forgot to answer, the other boards don't appear to have gotten wet. Possibly the power board but I don't think there is anything to see on the underside is there?Leave a comment:
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Re: Sony KDL-37m400 Relay Click...... Nothing
LOL, i've seen worse that ran still. I appreciate the help....Leave a comment:
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Re: Sony KDL-37m400 Relay Click...... Nothing
Ok, cleaned up everything I could find that looked affected and it not will turn on with tcon plugged in and even gives me a BRAVIA logo but turns off in about 3 seconds every time.Leave a comment:
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Re: Sony KDL-37m400 Relay Click...... Nothing
The TV was in the basment and he claims the water traveled in through the cable and dripped down on the tv. Must have been that way a while cause it is pretty corroded. I am not ready to give up on it so any troubleshooting help I can get is very appreciated. There is a transistor that has a kind of ooze look to it. How would I go about testing it.Leave a comment:
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Re: Sony KDL-37m400 Relay Click...... Nothing
Selldoor, I cant really figure out where the heck the fuses are on the front the arrow points right for the connector....Leave a comment:
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Re: Sony KDL-37m400 Relay Click...... Nothing
You can see plenty oh crud in several spots. Do SMD fuses leave something behind when they blow? I can't really find them....Leave a comment:
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Re: Sony KDL-37m400 Relay Click...... Nothing
Ok, I unplugged the tcon and got a little life out of the inverter board, the backlight would at least flash little. I heard a little whining, tried a few more times and it stayed on a little longer each time, but only briefly.Leave a comment:
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Re: Sony KDL-37m400 Relay Click...... Nothing
Ok, put it in broad daylight to get some pics. I tested some voltages, the standy was right on at 3.3v the unreg13v was very low .6v and reg12 was similar at .9v. don't know what that means but I thought I'd provide that info....Leave a comment:
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Re: Sony KDL-37m400 Relay Click...... Nothing
tvr 14621 i guess its a varistor. I'm guessing its normally open, is this correct?
Where do I go from here?Leave a comment:
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Re: 42" Spectrincq no power
Thanks to all who tried to help me. I have given up on this one. At least for now.Leave a comment:
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Re: Sony KDL-37m400 Relay Click...... Nothing
Diode test is 1070 one way and 230 the other,
Z1 is just above and left of the relay it looks like a ceramic disc capacitor but I don't think it is, guessing it has to do with surge protection.
I'll update the other thread, sorry about that. Just gave up, in over my head I guess.
ThanksLeave a comment:
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Sony KDL-37m400 Relay Click...... Nothing
I have a Sony 37m400 that was apparently getting wet. Person that asked me to look at it said it just died. It is obvious by looking at the main board and water stains running down the front that it had gotten wet several times over a long period of time.
Only signs of life are a clicking relay when attempting to power on and a standy light. I found a diode that's questionable, and I also would like to know what is at location Z1 just north of the main fuse on the power board, it tests open whatever it is.
The questionable diode is at D950... -
Re: 42" Spectrincq no power
Thanks Budm, bare with me here, I just pulled the diodes that I thought where bad and replaced one and tested and it tested bad! It seems that something on the board is making the diodes test bad, when I pull a leg they test fine. Is there a reason for this?Leave a comment:
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Re: 42" Spectrincq no power
Whats up with that resistor? The color coded one, somethings not adding up when I do the chart. They tested with very low resistance before it blew.Leave a comment:
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Re: 42" Spectrincq no power
I have a spare tny264p, do you think I could substitute?Leave a comment:
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Re: 42" Spectrincq no power
tny266pn, any easy tests for it? It had a tiny heatsink that popped off.Leave a comment:
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