Re: Samsung Plasma PN64F5500
Bump. Just need to isolate this new powersupply to make sure it is ok or not so I can dispute it.
Jasin
Member
Last Activity: 04-18-2016, 07:16 PM
Joined: 02-29-2016
Location: Columbus
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Re: Samsung Plasma PN64F5500
BumpLeave a comment:
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Re: Samsung Plasma PN64F5500
Leaving the main plugged in though right?
Doing that VS goes from 250 when it turns on down to 130 before I hear it reset and start over.
VA goes from 110/105 down to 90 before it resets again....Leave a comment:
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Re: Samsung Plasma PN64F5500
BumpLeave a comment:
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Re: Samsung Plasma PN64F5500
Ok, well I got a powerboard from China, Doesn't look the best, little rusty as well. However I popped it in and now I see a flashing red light on the tv.
I can relays click, hear the capacitors start to charge up the light flashed 5 times then the tv resets and does it again.
Any thoughts of what to check from here?Leave a comment:
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Re: Samsung Plasma PN64F5500
So I got the fuses and replaced the blown fuse. Plugged my TV and a big loud pop and a spark. My board is dead, most likely what happened the first time, I'm not going to try and repair it.
Can anyone recommend a good place to buy one from?Leave a comment:
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Re: Samsung Plasma PN64F5500
Thank you for that. I was using ground screw to measure. So all my measurements have been wrong from post 1. Will wait to get fuse and will post back with new measurements if I still have an issue....Leave a comment:
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Re: Samsung Plasma PN64F5500
Is that normal without the fuse? Want to make sure it doesn't blow again just by turning it on. Fuse ordered 4 more days of waiting
...
Leave a comment:
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Re: Samsung Plasma PN64F5500
I'm sorry I read your post too fast.
I did not replace UQ802.
Here is what is in the kit I replaced.
QS802C QS804C
DS808 DS810
RS819 RS833
RS827 RS835
DS813 DS807 DS809 DS814
FS801S
RS854 RS855Last edited by Jasin; 03-20-2016, 05:38 PM.Leave a comment:
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Re: Samsung Plasma PN64F5500
I replaced 802 and 804 first before I did anything else. Why would the new one in the kit not work?
I never had any voltage on the 5.3 volt or PS-ON.
Funny enough the kit came with a replacement fuse for T12AH250 soldered on fuse but not the T2AH250 in the middle. I removed it and everything is still as it was. I'm wondering if I just need a new one of those. If so I'll be mad at myself.
It would be helpful if I had schematics. I guess my main question.
Voltage on the left side...Leave a comment:
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Re: Samsung Plasma PN64F5500
I replaced all the surface mount components that came with the kit, no go. I guess I have no other choice buy to buy another power board.
Anyone recommend a good site?Leave a comment:
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Re: Samsung Plasma PN64F5500
Ok so I replaced these. Pretty sure they were bad after comparing them to the new ones I ordered.
Still have same issue though. It came with some of the tiny components on the back of the board. but they are hard to test if there is an issue or not since i'd have to take some of them off to test. Any guidance on how to proceed from here?...Leave a comment:
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Re: Samsung Plasma PN64F5500
Nope, it was just a pure black screen. Didn't look like it was on at all....Leave a comment:
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Re: Samsung Plasma PN64F5500
So I want to go with I don't know how to correctly test them. I removed both the 802 and 804 and tested most of the board. All readings are the same that I have been getting so I want to assume they are bad.
Should I be looking at any other components or just try and replace these? Tried to look up the numbers on them but don't find anything.
F 1C17AA
F 1C15BALeave a comment:
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Re: Samsung Plasma PN64F5500
I wasn't sure at which point I should be testing DC or AC. But the first post at the top was mostly all DC voltage checks.
Any pin listed 0 on the board I checked both AC and DC. Only different is if I do DC most of the 55 VAC is either 77 VDC or -80 VDC....Leave a comment:
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Re: Samsung Plasma PN64F5500
Nick,
That thermal paste was a pain to remove. Didn't want to just to bottom of board so I could confirm I had the right pins.
They seem fine. I did resistance tests between all 3 both ways none of them are 0 OHM. Most are 10M. Believe outside pins to the middle pin is only like 50 OHM. But I compared them to the other transistors around the board and seem to be the same.
I also powered the board and took voltage readings. all 3 pins are at different voltages....Leave a comment:
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Re: Samsung Plasma PN64F5500
Nick,
Sorry, I guess I should have marked the board better or stated the connection pins were all 0. I have attached a new picture with more readings.
I may have narrowed it down to the bottom right transformer. Not quite sure how to test it. The left 2 have 56 V on all 4 points. The bottom right only have 56 on the left 2 and 0 on the right 2. The 2 above them have plastic covering so I cannot test.
There are voltages on the 2 diodes next to it on the left and bottom but diode to the right is 0. I checked all...Last edited by Jasin; 03-07-2016, 12:05 AM.Leave a comment:
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Re: Samsung Plasma PN64F5500
Nick,
Thank you for the reply. I have to order a resistor since aren't any close electronic stores. But wanted to confirm something.
None of the 5.3 V pins (or any pins) on the power supply have any voltage. They are all 0. Does that matter? I can jump the pins when I get the part but just wanted to confirm that piece.Leave a comment:
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Re: Samsung Plasma PN64F5500
Bump -Leave a comment:
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Re: Samsung Plasma PN64F5500
Hey Nick, Thanks for the quick reply. You are correct that the pins to the other boards are 0 both connected and not connected....Leave a comment:
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