hi i have a sansui SLED3200 that power on with red lamp then the lamp turns green indicating go but no back light or tv never fully comes on ill put up image later when am the office this is a early post if any tech can help is well needed.
-
-
Re: sansui SLED3200 power on with red lamp the
Take a bright flashlight and see if you can tell if there is an image on screen when on.
More than likely an LED failed in the backlight or wires shorted and PSU senses the fault and turns off B/light circuit. I just repaired a Westinghouse 39" that had 3 bad LED's in B/light strips.
-
Hi all!
I'm trying to troubleshoot a Microsoft Surface Pro (5th gen) model 1796 that won't power on. Motherboard model is M1007506-015. My priority is retrieving data, but the SSD is integrated so it looks like if I can't repair it it'll need to go to a data recovery company. I've done a little basic board repair before, but nothing this advanced until now. So please forgive my ignorance in advance. 😅
I found the boardview for this laptop in the forums here, and am able to open it on my PC with FlexBV.
https://www.badcaps.net/forum/troubl...-hardware-devi... -
hello, �� i have been sitting on some microsoft surface pro 4 tablets for a while now. i was originally tasked with replacing the battery in one of the tablets, and ended breaking the screen and logic board in the process. decided to buy another tablet with the same specs. got that screen off successfully of the second tablet. the logic board appeared good, but i guess i shorted something out in the installation process of the logic which i've read is a common issue if there is no barrier between the logic board and battery pins. all that said, i ate costs of the repair and have... -
Hi there,
I've got a 39" LG 39LN540V that's just spontaneously stopped working! The symptoms are - when I plug it in, the red light will flash on twice, then go out, there's no visible picture, and I couldn't see anything using a torch on the panel either. If I press the power button (either remote or on TV), the red light comes on continuously. If I press power again, the red light flashes twice.
The TV is using a power board EAX64905301. I've attached a diagram of the power output, I've tested the voltages with a multimeter and I'm getting the following:
... -
I have wanting to do this project for quite sometime now and I finally found a switching power supply that will work on this desoldering gun station ZD-915 that the original switching power supply took a shit and just was not worth trying to fix it because this switching power is not quite big enough to handle the heater element and the vacuum pump
One note when I tested the switching power supply and the voltage control board I noticed that this desoldering gun heat up much faster than the original switching power supply which I was really surprised by to the point that I might buy... -
See pictures for type of laptop computer
I checked switching power supply brick 19.2 volts multi meter only
No booting without switching power supply connected
Checked switching power supply with an (28 volt ) incandescent light bulb it lights then hooked up the switching power supply again now the laptop and boots like normal
What the heck is going on here...
Comment