Samsung UE46D6500 doesn't turn on and clicks

[nomoresonys]

Re: Samsung UE46D6500 doesn't turn on and clicks

Did you check the voltage regulators on mainboard, he's checking them in video in post #11.

[voxahbc]

Re: Samsung UE46D6500 doesn't turn on and clicks

The diode D9601 tested bad in the circuit because it is connected in parallel with LOW Ohms resistor R960, you can look at the bottom side of the board to see how the Diode and the resistor are connected together.

Samsung BN44-00427A
https://www.shopjimmy.com/samsung-bn...pply-unit.htm#

BTW, we never get to see what Voltages you have (you power up just the power supply board) on the power supply connector when the connector from the power supply NOT connected to the main board.

Well actually I shared the results on the post #4. Am I getting it wrong? Just power cable connected while motherboard cable disconnected. I got only power and a5v constant, all the others are fluctuating.

Did you check the voltage regulators on mainboard, he's checking them in video in post #11.

I checked. When all the cables connected and in stand by, I got zero volts, only constant voltages on the cable that goes to remote control receiver and panel buttons. When powered on, I got fluctuating voltage on regulators.

[nomoresonys]

Re: Samsung UE46D6500 doesn't turn on and clicks

Well I don't know what's wrong but I'll be watching this thread, hope someone can solve it.

[budm]

Re: Samsung UE46D6500 doesn't turn on and clicks

OK,I re-read your post #4 again and see that you did report the Voltages on the power supply connector without anything connected to it except the AC input to the board.
Post #4:
1 OD_LEVEL 5.3V Max - fluctuating
3 OD_ON/OFF 5V Max - fluctuating
5 GND Continuity checked - OK
7 B13V 12.8V - fluctuating
9 B13V 12.8V- fluctuating
11 Vamp 12.5V - fluctuating
13 Vamp 12.9 V - fluctuating
15 GND Continuity checked - OK
17 B5V 5.4V - fluctuating
19 B5V 5.4V - fluctuating

2 P_DIM4 0V
4 P_DIM3 0V
6 P_DIM2 0V
8 P_DIM1 0V
10 B13V 12.8V- fluctuating
12 BLU 4.8V - fluctuating
14 GND Continuity checked - OK
16 GND Continuity checked - OK
18 A5V 5.4V - constant
20 POWER 3.4V - constant
So the standby is steady, the PS-ON is steady but other switched supplied are fluctuating. The strange part is that the BL-ON is fluctuating too which does not make sense because the pull-up resistor between BL-ON pin is connected to the standby power supply output which is steady.

[nomoresonys]

Re: Samsung UE46D6500 doesn't turn on and clicks

Inspect powerboard for any cold/cracked/loose solder joints, look closely at components on heatsinks and transformer joints as they take the most abuse, could be a bad capacitor??

[kacper69]

Re: Samsung UE46D6500 doesn't turn on and clicks

"When push to button to turn on "Smart TV" logo shows up and turns off with an endless cycle."

I suppose the NAND memory has a problem.
1. You can "freeze" this chip ( IC1301) on 10 sec.
2. switch ON TV in service mode (INFO - MENU - MUTE - POWER )
3. do FACTORY RESET in service mode.

Sometime you need this operation 2-3 times.
And TV could be work OK.
In this way i rescue some Samsung TV.

[nomoresonys]

Re: Samsung UE46D6500 doesn't turn on and clicks

Any update voxahbc?

[kacper69]

Re: Samsung UE46D6500 doesn't turn on and clicks

This operation is without any update.
But TV set is like new, need setting everything in operator mode.

[nomoresonys]

Re: Samsung UE46D6500 doesn't turn on and clicks

Damn dude that waving hand is irritating.

[voxahbc]

Re: Samsung UE46D6500 doesn't turn on and clicks

Any update voxahbc?

Unfortunately no any update. I might try with another powerboard if I find one.

[voxahbc]

Re: Samsung UE46D6500 doesn't turn on and clicks

"When push to button to turn on "Smart TV" logo shows up and turns off with an endless cycle."

I suppose the NAND memory has a problem.
1. You can "freeze" this chip ( IC1301) on 10 sec.
2. switch ON TV in service mode (INFO - MENU - MUTE - POWER )
3. do FACTORY RESET in service mode.

Sometime you need this operation 2-3 times.
And TV could be work OK.
In this way i rescue some Samsung TV.

Why do you think that it's motherboard so the NAND? While motherboard cable disconnected the voltages on the power board already fluctuate except power on and stand by.

[nomoresonys]

Re: Samsung UE46D6500 doesn't turn on and clicks

I would still lift a leg on that diode and retest, just to be sure.

[bigstuff77]

Re: Samsung UE46D6500 doesn't turn on and clicks

I've got a similar issue with similar readings on a UN46D6420. I'll be following this thread closely. Good luck.

[bigstuff77]

Re: Samsung UE46D6500 doesn't turn on and clicks

I guess voxahbc gave up on this one? Is this problem fixable? I'm about to give up on mine.

[bigstuff77]

Re: Samsung UE46D6500 doesn't turn on and clicks

I changed the LED strips on mine and now it works.

[Davi.p]

Re: Samsung UE46D6500 doesn't turn on and clicks

The problem is much common and is due to software conflicts. I ask to "shaking hand" which is the technical meaning of your guide? Can you explain? I see no sense in it.. For the fluctuating voltages i see that your tester has a BL icon that probably say its battery is low, so retest..