I have a tc-p42c2 the light for power does not light up the tv will not turn on.I have 5 v standby voltage and on power switch i have 5v when i turn swicth on it dropes to 0.any ideads what i can check thanks
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Re: Tc-p42c2 no power light led
sounding like A board, front LED power comes from the MPU, and the on switch looks like a momentary push and earths out whatever line it is to the mpu.
Have you tried isolating the sn & SS boards just in case they are the issue? The SS on these shorts out.Last edited by tw2005; 01-29-2015, 03:23 PM. -
Re: Tc-p42c2 no power light led
No i will try it today but it really looks like a aboard problem.i think i am missing my 3.3 vComment
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Re: Tc-p42c2 no power light led
longshot but check sd card slot for anything stuck in there like a coin, have had the odd fault where a child stuffed something in there although probably expect a sos blinkComment
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Hi Everyone. First official post so fingers crossed I conform and also manage to get photos to work.
So I am requesting some help from anyone who happens to have one of these motherboards to hand and perhaps a multimeter.
My board has a single row of header pins for all the front panel stuff (have seen others where they are grouped together differently so thats no help) and the two pins for the power on switch had been previously repaired and I am trying to make a better repair. There looks to be pad and trace damage and im happy to relocate the header pin/pins to...06-24-2024, 01:24 PM -
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:
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Hello,
I've been working on a NEC TurboExpress and I accidentally got the plastic inside the power ON/OFF switch too hot while doing other repairs and melted it. At first, it would still power on when sliding the switch, but you had to really press inward while sliding to get it to work.
I removed the switch component and tried to gently melt the plastic back so it would work more reliably and all I managed to do was make it worse.
I need to find a replacement On/OFF switch for this, but having some trouble figuring out which kind of switch I need.... -
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...
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