Re: Samsung LN46C610N1FXZC - Turns on, then off within in a few seconds



No, prior to hitting the power button on the remote so the TV is I guess essentially in standby mode.

From my last update, the TV won't even chime that it is turning on anymore nor do I see the backlight turning on. I did check that the backlight still powers up with the main board disconnected from the power supply this morning and it did.

The red status light comes on upon plugging in to AC mains. When the power button on the remote is pushed, the light flashes...

Re: Samsung LN46C610N1FXZC - Turns on, then off within in a few seconds



Strangely enough, the replacement board has two stickers. One says BN97-05155C on one sticker and BN96-19438A on another sticker. The board is labeled BN41-01436C.

The original just had the one sticker with BN97-04040E with the similar board number, BN41-01436B.

I can't even get this TV to power up anymore. No melody or anything. ...

Re: Samsung LN46C610N1FXZC - Turns on, then off within in a few seconds



I'm beginning to think you nailed it. I did not get if off shopjimmy as they were sold out on any variant of the board. I did buy it from a seller that provided 30-day returns. But, for the cost of shipping its probably not worth it....

Re: Samsung LN46C610N1FXZC - Turns on, then off within in a few seconds

Here is a more complete picture of the back of the TV....

Re: Samsung LN46C610N1FXZC - Turns on, then off within in a few seconds

I disconnected the cable between the power supply and main board and checked the voltages across the caps and they both measure 386V.

Here are the voltage measurements at CN802:

Pin Label TV Off (Volts) TV On (Volts)
1 B13V 0 12.89
2 LAMP_DET 0 5.14
3 B13V 0 12.89
4 SW_INV 0 5.08
5 B13V 0 12.89
6 PWM_DIM 0 2.05 - 5.1
7 GND 0 0
8 H_SYNC 0 1.66
9 GND 0 0
10 GND 0 0
11 B5V 0 5.13
12 GND 0 0
13...

Re: Samsung LN46C610N1FXZC - Turns on, then off within in a few seconds



Thanks Bud. I'm new to this forum but I've read ALOT of your posts to help bring myself up to speed here.

I think I grabbed a schematic for the power supply board, so I'll have to look in to troubleshooting the PFC circuit.

My week is pretty busy with "work" so I'll try to take some measurements this week on the power supply connector and post my findings.

When the TV "powers off", it is almost like the Power OFF button on the remote...

Hi Folks,

I picked up this LCD TV for free looking to get myself back in to working on electronics. When I picked it up I immediately noticed that one of the HDMI connectors were broken right off the board. At that time, the TV wouldn't turn on at all. I disconnected the main board to see if the backlight would come on and it did. I visually inspected the power supply board and I can't see any visual signs of cap failures. I have yet to do any testing with a multimeter.

I picked up another main board, not exactly the same but listed as a replacement on shopjimmy....

Re: New Members - please post your introductions here

Hello Folks! New member here, but not new to electronics. However, I haven't had time in the last 5-10 years to dabble with a TV repair but I've found myself with a TV on my bench that I'm trying to revive. Looking forward to collaborating on this gem!! Cheers, Jim