Re: L65X1Q_DHS / BN44-00627A Samsung UN65F6400AF Standby blinks twice five times
Good morning or evening to everyone. I am abandoning this project as I don’t have the time to devote to it and my skills in this field have a lot to be desired. The last thing I checked was the optos and the diodes on the bottom side. I found 2 diodes short and replaced them and found the optos working when I pulled them and checked. This project is beyond my skill level. Thank you for all your help and support. I am willing to share anything from this project with any of you if you need anything...
cekanayake
Member
Last Activity: 05-01-2023, 12:17 PM
Joined: 05-12-2019
Location: San Antonio
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Re: L65X1Q_DHS / BN44-00627A Samsung UN65F6400AF Standby blinks twice five times
The Vamp pins 11 and 13 are at 8.04v
Caps cs801 at 387v cp803/cp804/cp805 at 387v
On the cold side caps c9454/c9354 at 191v but c9154 fluctuating between 126v-115v and c9254 fluctuating 190v-160v happens between screen BL flashes bright then goes back to regular brightness...Leave a comment:
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Re: L65X1Q_DHS / BN44-00627A Samsung UN65F6400AF Standby blinks twice five times
Ok did the above with 1k Resistor jumped from A5v to each on/off pin results in B13v at 8.04v and B5v at 4.49v will check opto couple next...Leave a comment:
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Re: L65X1Q_DHS / BN44-00627A Samsung UN65F6400AF Standby blinks twice five times
So measure A5v shows constant 5.3v does this mean main board fault?...Leave a comment:
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Re: L65X1Q_DHS / BN44-00627A Samsung UN65F6400AF Standby blinks twice five times
Ok. Tested with either cable and both cables disconnected from the t on board to the panel and symptoms are the same cycling and flashing the BL. Does this mean fault in PSI or main board or tcon board?...Leave a comment:
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Re: L65X1Q_DHS / BN44-00627A Samsung UN65F6400AF Standby blinks twice five times
When I take out both(B13v)s (with B5v on)and try it still cycles but the BL does not flash. When I take out the (B5v)s leads(with B13 on)it goes back to doing the original standby flashing twice 5 times over and over but the BL flashes. I didn’t get to disconnecting the tcon cables one by one as that would mean that I have to take this giant tv and lay it flat. Probably do it tomorrow morning. Thank you Diah and nomoresonys.Leave a comment:
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Re: L65X1Q_DHS / BN44-00627A Samsung UN65F6400AF Standby blinks twice five times
Yes. With main board disconnected backlight stays on...Leave a comment:
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Re: L65X1Q_DHS / BN44-00627A Samsung UN65F6400AF Standby blinks twice five times
Update: Replaced ICM801CS with FSFR2100XSL. Board flashes backlight now while standby light turns on and off.
Voltages: while main board plugged in
Pins 7 and 9 (B13v)goes upto 11v then goes down with the backlight flashing
Pin 17 and 19 (B5v)goes upto 5.3v then goes down with the backlight flashing
Pin 20 (PS on/off)goes upto 3.3v then goes down with the backlight flashing
Pin 18 (A5v)has constant 5.38v
I am wondering what else may be wrong. Any help please....Last edited by cekanayake; 04-21-2023, 05:28 PM.Leave a comment:
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Re: L65X1Q_DHS / BN44-00627A Samsung UN65F6400AF Standby blinks twice five times
Thank you. I will order it. I will update after I make the change....Leave a comment:
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Re: L65X1Q_DHS / BN44-00627A Samsung UN65F6400AF Standby blinks twice five times
Looking at the remnants of the IC-pictures posted, I think it might be FSFR2100XSL. Please take a look at it let me know what you think...Leave a comment:
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Re: L65X1Q_DHS / BN44-00627A Samsung UN65F6400AF Standby blinks twice five times
Upon closer examination of the burnt IC the last few numbers on the part number may be 100XSL. So could this be an FSFR2100XSL? If so I will replace it with this part and update here. Thank you everyone for the quick responses to my issue....Leave a comment:
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Re: L65X1Q_DHS / BN44-00627A Samsung UN65F6400AF Standby blinks twice five times
When main board plugged in pin 20 shows 3.3V while back light is lit and goes down to 255mv when back light is off. This keeps cycling continuously. What can this mean....Leave a comment:
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Re: L65X1Q_DHS / BN44-00627A Samsung UN65F6400AF Standby blinks twice five times
OK got it. The only legible letters on the IC are XSL. Pictures attached. What could be the actual part I need to fix the board? I looked all over the internet for a schematic for it and could not find it.Aafter looking at the board and the schematic for the HSL I thought it would be the correct part and thats why I got this replacement....Leave a comment:
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Re: L65X1Q_DHS / BN44-00627A Samsung UN65F6400AF Standby blinks twice five times
I mounted the PSU board back on the TV to measure the voltages and now it is flashing the back light continuously.
Here are the voltages I measured when the main board was disconnected. Pins 2, 4, 6, 8 around 2.5V and 10 at 11mv 12 at 2.43V 18 at 5.38V 20 at 3.37V. Pin 1 at 0V 3 at 1.11V pins 7, 9, 11, 13 at 7.62V pin 17and 19 at 4.22V
I measured the voltages of the outer pins as they are exposed and could not get good readings of the inner the pins. Pins 7, 9, 11, 13...Leave a comment:
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L65X1Q_DHS / BN44-00627A Samsung UN65F6400AF Standby blinks twice five times
I am a noob with some elementary knowledge trying to fix this TV that I have no history on. Any help or guidance will be much appreciated.
When I first examined it was completely dead. saw that the fuse was blown and the ICM801CS blown. I searched and found that the FSFR1800HSL might be the replacement and got one from ebay and replaced it. But when I pulled the ICM801CS I could see the last 3 letters on the blown up part was XSL. So may be I replaced it with the incorrect part. I fixed the fuse and turned it on and it now gives me a standby light blinking twice five times, then clicks... -
Re: New Members - please post your introductions here
Hello from San Antonio Texas. I am always interested in all things electronic and computer networking. I have a question on a TV I am trying to fix and will post it separately.Leave a comment:
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