Samsung plasma PN58B650S1F clicking relay no picture

[tom66]

Re: Samsung plasma PN58B650S1F clicking relay no picture

Nice one! Thanks for the repair feedback.

[mardocdor]

Re: Samsung plasma PN58B650S1F clicking relay no picture

Update: received the new tuner board this afternoon, installed, & BANG!, we have a perfectly working 58" plasma!!! All I need now is a stand. Thanks guys. I appreciate the help & technical expertise...

Hey! Just following this thread and got confused a little bit, would you mind? Is the tuner board the same with the with the main board or that the tuner board is integrated with the main board?

[hienton2]

Re: Samsung plasma PN58B650S1F clicking relay no picture

I think the main board is the board has tuner in it with micro controller..

[MyEvolution]

Re: Samsung plasma PN58B650S1F clicking relay no picture

Update: TV is still working great, have been fine-tuning the adjustments for the picture, and to the earlier poster I didn't know whether to call it a tuner board or mainboard as both names seem appropriate.

[tom66]

Re: Samsung plasma PN58B650S1F clicking relay no picture

Samsung calls them main boards, as do most manufacturers, so that's the terminology I use.

[WIRIPours]

Re: Samsung plasma PN58B650S1F clicking relay no picture

Where did you order your BN97 main board from and the cost?

[kelkil79]

Re: Samsung plasma PN58B650S1F clicking relay no picture

Hello. I know this is an old post but as I'm a new member I'm hoping in this comment that someone could help me with a similar issue with my tv which is the exact model. Just today the tv shut itself off, and continued with the cycle of on/off with no picture. from what I've been reading, most people say bad capacitors, but none of my capacitors are bulged nor look bad in anyway. the tv clicking is definitely coming from the powersupply board.

I'm not the most tech savvy person, so I'm not sure what steps I should take. At this point I was thinking of just ordering the powersupply board, installing and hoping for the best. However, from reading this post I wonder if getting a tuner board would be the best. I apologize for my ignorance concerning these matters I just hoped to get a little advice from the pros.

[unkiexeon]

Re: Samsung plasma PN58B650S1F clicking relay no picture

Thank you for this awesome resource! I would really appreciate some additional help on this same issue.

I purchased my PN58B650S1F Plasma in 2009 and just yesterday (12/26/2014), the TV went into the clicking loop with no picture; exactly as described by MyEvolution in this thread. I performed all steps as advised in the forum thread, but for the sake of being thorough I am posting my exact steps below.

This is what I have tried but I'm still not 100% sure on what part(s) might be the culprit.

When I describe LEFT SIDE and RIGHT SIDE, these sides are related to the back of the TV or while I am facing the back.

Symtoms:
1. TV will immediately start clicking when I plug it into the wall. A series of 3 clicks 1-2..3 (5 second pause repeat).
2. There is no picture or change in the screen during the power cycle above.
3. The readiness light on the front bottom right hand corner stays on (red) during the above power cycling.

What I have tried and my results:

1. I disconnected each wire harness connected to the Power Supply one at a time, then plugged the TV back into the wall. If the TV continued to click power cycle, I would re-attach the wire harness I just unplugged and unplug the next and repeat.



- I found with the above test, the Main Board (tuner board) would stop the TV from clicking.



2. While leaving the power cable going to the main board (tuner) disconnected, I jumped PS-ON to GND, VS-ON to 5V with 100 ohm resistors and disconnected the LVDS flat ribbon cable that leaves the top of the tuner board and connects to the tcon (logic board). I plugged the TV to the wall.



- The normal power quick click would occur and the TV no longer power cycles as before.
- The green logic board light now blinks slow and steady.

*** IMPORTANT ***
With the above step, I noticed a melting plastic smell coming from the LEFT SIDE and saw a bit of smoke seeping out of the top left portion of the TV (behind the main metal shield and the plasma screen backing and directly above the left wall support. Although the smell seem to emanate from near the y-main board, I did not see smoke from the board itself. As soon as a smelled the plastic, I unplugged the TV. This definitely smelled like plastic and not electrical.

3. To prevent any damage to the Y-Main and X-Main, I disconnected the power cable going to both and plugged the TV back into the wall so I could measure the power supply voltages.

VS = 201 volts DC
VA = 55 volts DC
all other voltages check out, 15v, 5.3v etc.

4. With the TV unplugged, I plugged both the y-main and x-main back to the power supply board, added the jumper to pins 3 and 4 (left set of pins on logic board). Since I was concerned with the melting smell, I quickly plugged in the tv to look for a test pattern.

- Test pattern failed - no display or change.

NOTE: I notice the normal hum coming from both y-main and x-main, but only the bottom left heat sink on the y-main seemed to get warm - all other heat sinks were cold.

5. I unplugged the TV and the power cable going to the y-main and checked for continuity across the green inline fuse (upper right hand corner for the y-main - looks like a resistor).



- There is NO continuity (no tone) across the green fuse.

NOTE: Checking for continuity across the green fuse on the x-main checked out (tone).

Based on my testing, I would think the y-main is bad, however, I need to know if the green fuse should have continuity or if this is more like a diode, where I wouldn't hear a tone when testing with my meter.

Are there any other tests I can do on each component to be sure I order all the parts I need?

Thank you for your expertise. I look forward to getting my TV fixed.

[unkiexeon]

Re: Samsung plasma PN58B650S1F clicking relay no picture

I wanted to add the images to my original post as attachments. Sorry for missing this request in the sticky.

I also wanted to note, I have checked all removable fuses for continuity and all have checked out.

Thanks again for your help. I really appreciate it!

[Jayme261]

Re: Samsung plasma PN58B650S1F clicking relay no picture

Tom i tried jumping to see what would happen and it just clicked with the green light. Do you know what it could be.

[sebwiecz]

Re: Samsung plasma PN58B650S1F clicking relay no picture

Hello boys

Does anyone know what panels match S58FH-YB03 - does it have to be identical?
Tv model PS58B680

seba