Tv has 5vdc no picture or sound. Problem is the P.S. and M.B. connectors are nor labeled. No Service manual either. Does anyone have a P.S. schematic?
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Re: Sanusi HDLCD4040A Tv dead
Can we see good clear pictures of the bottom side of the power supply board?
You can check to see if you have any DC Voltages on those two main filter caps?
Spec of the STBY Power supply IC?Attached FilesNever stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809 -
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Hi all,
As the title suggests, how can I be sure that my EC chip is really dead?
I've recently gotten into this hobby of laptop repairs, and have successfully brought back to life a couple with some easy fixes, mostly shorted caps.
Now I'm working on HP Probook 455 G8, that had some "devil" run around on 3V line, burning a bunch of stuff. Luckily I have a dead 455G7 (for spare parts) so I managed to fix it (swapped burned parts) to a point that it will charge (both on barrel jack and usb-c), but it doesn't want to turn on. There is a 3V3 on a keyboard... -
Hi everyone.
Recently scored a dead amp from a mackie srm1801 subwoofer and after fixing it, now I'm thinking about a home cinema/party subwoofer project.
Most likely I will use a 15" JBL woofer, which I already have and a diy box.
After reading the mackie user manual, I noticed that it has a 40hz HPF (labeled as "36Hz BUTTERWORTH HPF" in the SM) to protect the speaker from low frequencies. Indeed this seems to be good idea for the intended usage - professional music subwoofer, but bad for movies, where one would expect to "feel" the SUBwoofer.... -
Hello,
first of all I want to apologize for my bad English, but I try to give my best.
Customer brought me a laptop, which is charging the battery (when the dc-jack is connected) but don't power up when the power-button was pressed down. Only the white LED lights up, and you can hear a short noise in same interval when power-button was pressed and hold for longer timer. The customer changed already battery and dc-power-adapter.
For this laptop the correct shematic is the service manual "Clevo NH50ER NH57ER NH50EPS NH57EPS - 6-71-NH5S0-D02 Schematic".... -
hello guys,
i need help to repair a edm-033 ps2
history : as always hdmi port and usb ports destroyed after unplugged
after change them, ps5 dead too : 1 beep, no blue light. after inspection 1.8v power was shorted, and because of dead panasonic chip. after remove it : no short anymore
so i changed it
now i have got 5v stby,, 3.3v stby, 3.3v power, 1.8v power and no short on them
but the ps5 is dead again : 1 beep, near 10 seconds with power lines and then off, no blue light ...
i don't see any projection of liquid metal on pcb.
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I’ve had and got a few projects using quality CAT6 and CAT7 23awg solid copper, shielded, direct burial cable. Each time I use CAT7 connectors, most of them fail making good connections to the 4 wire pairs after crimping. I tied a couple of crimping tools, thinking my crimper is bad. Also used different CAT7 RJ45 connector manufacturers. Same thing. I kinda calculate 6 connectors to make one cable!
Get this: I use CAT5 or CAT6 connectors, no problem. Very rare I have a miss crimp with those. So what gives?!
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