ไม่สามารถเล่นวิดีโอนี้
ขออภัยในความไม่สะดวก
Samsung UN65JU6500fxza no picture, no power, & no standby light TV repair.
ฝัง
- เผยแพร่เมื่อ 7 พ.ค. 2023
- We have a Samsung un65ju6500 series TV that has no power and no standby light. The cause of this problem is a destroyed PFC circuit on the power supply board; part # BN44-00808a. We will replaced the burned components in the PFC (Power Factor Correction) circuit, which includes both PFC mosfets, a 4.7 ohm 2 watt resistor, a 220 picofarad ceramic disc capacitor, and the AC fuse.
The ART of Servicing and Repairing Modern Televisions...
bigdogtvrepaircourse.mykajabi...
Thanks BigDog for your wisdom! I fixed and replace LED TV lights for the first time, and it worked. Thank you much.
Nice!
Thank you for helping young families save $$. Gracias!
Excellent job BigDog!
Thanks, you are a legend.
I usually change the mosfet driver ic since when mosfet goes short it puts full supply back into the gate driver👍
Yeah, usually if the smd resistors at the mosfet's Gate are burned, then its definitely time to change the IC. Hopefully we'll be good for a while on this one.😜
Power supply issues or something simple like a fuse? Picked up a relatively new 19 inch Sanyo for about 20 bucks online and it was just a 79 cent fuse!
Great vid
Nice sir
shot bigdog, ur dam. supatanx
Good job, but seems like a lots of extra work. Maybe an expensive power board? Keep those bad power supplies laying around to harvest those fuses.
Excellent video thanks for making and sharing your knowledge. I'm trying to work out why our Samsung TV has no power, I've checked the PSU board and there is no physical signs of damage (burns/buldged caps) I checked the main fuse on the PSU and its good, when I disconnect the main board with power on the backlight does NOT illuminate, what does this mean? Also I checked the PSU to mainboard connection and the pinout says A13V so I was assuming 13V but im only getting 3V on all those pins labeled A13V. If you have any wisdom I would love to have your input. Thank you and blessings.
Thanks. their is a series of checks on primary side and secondary. If you watch the last video I did on the Sony PS board. That may help.
@@bigdog8882 You're welcome! Ok thank you kinldy, I'll check it out!
My school bought 17 70" Samsung TVs one summer, they are now 2 years old and out of warranty. I did TV repair in the early 80s and as a hobby ever since. The 4 all have the boot cycle issue. I have narrowed it down. If I disconnect the jumper on the LCD panel going to the right side or the left side, the backlights stay on. At that point, I figured the middle section (T-Con) was the problem. The one IC I could replace is a PIC chip. The Datasheet shows it as non-volatile storage. Okay, I'm done. The IC might need to be re-flashed, or the screen is bad. But then it came on for no reason! Looked like it was okay responded to the remote. Unplugged it, waited a few seconds, and plugged it back in. No good. Back to the boot loop. If the chip lost its programming or the screen was bad, it wouldn't fix itself. AI's not there yet. Any advice on this would be really appreciated. I have 13 more in classrooms from the same batch.
Does anything come on the screen or is it a blank display when it cycles?
Blank. All LEDs turn on and change brightness (as seen through the holes in the back plate). The red LED blinks twice, then turns off and back on with a chime sound like normal. I have 4 of them, all exactly the same. I guess there are no more Sams Photofacys anymore.
Changed both modules, the mail one twice the first time.
Can you tell the Multimeter Brand you use?
Hey Bigdog , I have a 64 inch hisence sound with no picture . Where are you located for tv service ? I am in calumet city.
i mean ur da man
I have a Samsung un50ku6300f which I have replaced all LED backlight strips, power and main board. It still wont boot up. The backlights flash brightly for about 3 sec then flash dimly for about 2 seconds and then go off. the cycle repeats after about 20 seconds. If I remove the cable from power to main board, backlights come on and stay on. Leads me to think problem is not power board of anything to do with backlights. This has me really stumped!
Hello,
I came across your videos while trying to troubleshoot a BN44-00611A, U gotta tell you I learned a lot from your videos. Unfortunately, I cant find any troubleshooting guides for this model anywhere. The model itself is rare. It looks a lot different than most of these boards you have. Do you have any suggestions? It has sound but not picture. It was initially an LED strip that was shorted so I fixed that, but still not working. THank you.
U sound like you like learning. If your sure its not the led's still, then I suggest the troubleshooting course. Just go to my Channel Page to get the link.
@@bigdog8882oh screw you for that
Where are you located
are you from chicago?
Yes.
@@bigdog8882 any way to get your contact info. I'm also from aurora wants to talk about business if you have time.