Re: BN44-00301A No signs of life
From what I've been reading, 5,1VDC should be available when the TV is off. I don't have that voltage anywhere.
Anyone know where the jumper must be placed in order for the inverter to switch on when outside of the TV?
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BN44-00301A No signs of life
Hi everyone.
I have a Samsung TV with a BN44-00301A PS board. When plugged in the TV shows no signs of life what so ever. No red standby light, no clicking, no back light..nothing!!
First, I can´t find the right schematic online, if anyone has a copy, or know where I can get one I would really appreciate it.
Second, I have checked the fuses, they are good. I have measured +/- 400VDC at the rectifier bridge.
I'm a noob at this so any help would be awesome.
Pics of the board are attached..no signs of heat of anything else.
Cheers.Attached Filesif you find these attachements useful please consider making a small donation to the site
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Hi,
So i got above mentioned laptop. Which shows only some little signs of life.
When i turn it on, 3 buttons lit up and stays like that forever (ESC, Caps Lock and Num Lock), they dont blink, they are just lit all the time. Fan does not spin, and there isnt any heat from CPU.
What ive already done:
-Flashed both bios chips 16 and 8 mb.
-Tried adding another stick of ram
-Check if backlight is faulty.
So any ideas?
Thank you09-03-2025, 06:34 AM -
I picked this one up today.
Previous owner says no signs of life.
TV looks immaculate and its a 2022 model year so I thought maybe the one connect cable was damaged.
Got it home and put it on the Kill-A-Watt power meter and it was completely dead.
The TV model is QN65LS03BAFXZA - version: CB06
The One Connect Box BN44-01066D / BN96-54788Q / BN39-02470A.
I immediately remembered EazyBone's Samsung The Frame TV no power....One Connect thread and am preparing myself to tear the One Connect open and hunt for dead parts.
Will keep you all... -
Hi.
I have a laptop Dell Vostro 3501 which did not POST. When connected to power supply and turn it on, the keyboard backlight would turn on but nothing else. Sometimes there was 1 BEEP code indicating problems with BIOS.
Then I disassembled it to read the BIOS chips. It had 2 - 64mbit and 128mbit. I connected CH341A (with 3.3v mod) to both of the chips (still soldered on main board) and read them.
After I reassembled laptop back and tried to turn it on. Now there is no sign of life. Not even keyboard backlight.
Then I took the motherboard out... -
hello, i have a problem with HP EliteBook 850 G5
shoring no signs of life. led near charging port and on/off button are off.
board it taking just a few mA..i think it was 10mA
i measured some things but i don´t find anything
the ACOK ? pin 24 FRWPG (pin 24) am ISL9538h is low with 0V
but i dont know why
i cant really understand what the mosfets in the pictures are doing for crazy things.
i measuered voltage on coils....but now on mosfets near the coils too and they all had more than 10v i think one was there with 8v or something....so... -
Picked this one up today.
No signs of life whatsoever. No red led light from the IR module.
Disconnected the mainboard to see if PSU was working and it was (LED backlights lit up).
Checked the power button for continuity when buttons were pressed and I got readings.
Disconnected various components (speaker, wifi module) with no difference.
Checked mainboard's fuses (found 3) and they were all good.
I looked on shopjimmy to see what components I may have been missing and I saw that they were selling EEPROMs.
Then it dawned...
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