Re: Samsung LN46A550P3F - No Power - Clicking
Hope everyone is having a great holiday season. I was finally able to order a replacement main board from shopjimmy.com. After installing it and connecting all of the cables, I plugged in the power cord and crossed my fingers. As soon a I plugged it in, I heard a click and then the tv came on with static and a message saying no signal was detected. I thought I was in the clear until I heard a click and the picture went out. After a couple of seconds, the picture would come on again and then 27 seconds later, click and picture would go...
mrhanso
Member
Last Activity: 09-17-2014, 03:44 PM
Joined: 01-23-2012
Location: Denville, NJ
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Re: Samsung LN46A550P3F - No Power - Clicking
Is trouble shooting the main board worth it, or is my only hope replacing it?Leave a comment:
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Re: Samsung LN46A550P3F - No Power - Clicking
OK, I did that and the back-light went on. No more clicking, just a steady back-light.
When I tested the voltage on the 13v pins, I got the following:
Pins 19, 21, 22 - 12.72v
Pins 7,8 - 12.88v
I assume this means it's either a mainboard or inverter issue?Leave a comment:
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Re: Samsung LN46A550P3F - No Power - Clicking
OK, however reading the pins next to the ends of the header, I thought 1&2 were the two in the first row, and 23&24 were the row at the other end. Wouldn't that mean pin 3 is the first in the second row?Leave a comment:
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Re: Samsung LN46A550P3F - No Power - Clicking
OK, I just want to be careful here since I've never done this before. Does the picture below look ok? I connected all three ends together....Leave a comment:
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Re: Samsung LN46A550P3F - No Power - Clicking
Thanks for your reply. I have a bunch of spare boards lying around that I can cherry pick. Do any of these resistors look good?. I matched the bands and they seem to be in the range you're looking for. As far as I can read, I have:
Br/Bl/Br/Go = 100?
R/Bl/Br/Go = 200?
Br/Gr/Br/Y = 150?...Leave a comment:
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Samsung LN46A550P3F - No Power - Clicking
Hi,
Firstly, I want to thank all of you for helping me fix my LCD TV a couple of years ago. After replacing the capacitors, it's been running fine ever since. Unfortunately, my other TV isn't as reliable. One day, I went to turn it on and no picture came to the tv. The glowing blue light is on, but no picture ... and a clicking every 26 seconds.
After googling, it appears to be a very common issue with this model, and actually Samsung in general. So I took the TV downstairs to take it apart and most likely replace the capacitors. However, when I look closely at the... -
Re: Another VW42LHDTV10A no picture, no sound
I just want to say thanks to all that helped me on this project!
After recapping both inverter boards and the power supply, everything is working great now.
Surprised the hell out of me when I plugged it in and saw a blue screen.
Also, just want to note for future Vizio TV troubleshooting that when the blue screen came up, the initial text on the screen said "No RGB Input Detected, TV will shut down now", and 43 seconds later it went into standby mode. This is most likely why...Leave a comment:
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Re: Another VW42LHDTV10A no picture, no sound
I measured all six (both boards) and they all ranged between 8.38k and 8.47k....Leave a comment:
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Re: Another VW42LHDTV10A no picture, no sound
Ok, seems like there is plenty of room if I'm off a mm or two.
I noticed on the inverter boards, the solder is on the top and there are no holes to put the leads through. Any tips or techniques on how to solder the new caps on the board?
Hopefully, there is nothing wrong with the chip and fets because I think that solder work is out of my league. lol.Leave a comment:
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Re: Another VW42LHDTV10A no picture, no sound
Ok, so based on your advice, I'd like to recap the inverter boards and the power supply. Looks like I've already ordered the cheapies and don't want to use them. Using the readings on the caps I want to replace, I used your advice and searched digi-key for panasonic FM series caps. Here is my list:
Qty Part Number Description
1 P12413-ND CAP ALUM 330UF 35V 20% RADIAL
4 P12417-ND CAP ALUM 680UF 35V 20% RADIAL
3 P12405-ND CAP ALUM 1000UF 35V 20% RADIAL
3 P12389-ND CAP ALUM 470UF 25V 20% RADIAL...Leave a comment:
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Re: Another VW42LHDTV10A no picture, no sound
OK, I took the board off and can read the detailed information on the back. Looks like a 680uF, not a 470uF like I thought. They seem to be 10mm x 22mm.
Also, i might be getting a little paranoid, but I really started inspecting every cap for any type of bulge. I think I found one on the power supply with a very slight bulge, so just to be safe, I'm going to replace that one also. That one says Rubycon, 25v 470uF Y X G and looks like it measures 20mm x 7mm?
[ATTACH]36631[/ATTACH]
[ATTACH]36632[/ATTACH]...Leave a comment:
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Re: Another VW42LHDTV10A no picture, no sound
Well, it looks like my project just got a bit more complicated. Upon further review of the inverter boards, it looks like all four caps are bulging and two have even leaked? Is it possible that the bulging cap on the power supply caused this ... or vice-versa?
Also, there are no markings on these caps, however I read some blogs that say they are 470uF 35v? Are the markings underneath and are they replaceable? A quick search on Ebay is showing refurb inverter boards for $60 each! Not the direction I was planning on going....Leave a comment:
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Re: Another VW42LHDTV10A no picture, no sound
Thanks again retiredcaps for your fast response. I always filter my ebay searches for US only. These are coming from Florida from a reputable seller and should be here tomorrow. Hopefully, they'll make due for now ... I have 5 to try! I'll put in an order for the panasonic ones also.Leave a comment:
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Re: Another VW42LHDTV10A no picture, no sound
Thanks all for your input.
I'll make sure I replace the cap with the one you show on digi-key once this thing is up and running. For now, I'll assume the ones I ordered will do for testing purposes. I attached some closer pics of the power supply. The model is a FSP254-3M01 Rev 1. I also took a pic of the PS bottom. Keep in mind, the solder job on the Mosfets was done by me after I tested them. I will also neaten that up afterwards if I don't end up buying a whole new board.
[ATTACH]36608[/ATTACH]
...Leave a comment:
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Re: Another VW42LHDTV10A no picture, no sound
I'm honestly not sure what brand of caps I bought. I matched the uF, voltage, and temps. I picked them up on ebay for 5 bucks. Will these suffice?
[ATTACH]36606[/ATTACH]...Leave a comment:
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Another VW42LHDTV10A no picture, no sound
Hi,
Been following your threads for a while and amazed at how much I've learned already. I have a Vizio VW42L where a get no picture or sound. Based on the previous threads I've read on this model, I'm thinking its a bad main board or power supply / capacitor. My case is a little more unusual than the others.
Here are the symptoms.
1) When I plug the TV in, the Vizio LED glows orange
2) When I press the power switch (on remote also), the LED goes to White
3) The LED stays white for exactly 43 seconds, then goes back to orange.
4)...
No activity results to display
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