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It has a diode in the back that is sposed to be yellow and has burnt out and cracked in half. Screen no longer works and the diode sparks in a pulse like manner when turned on.

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Really need to know the make & model of your TV. There are several diodes that fit this description, if possible look closely at the printed circuit board either on the top where the diode or the underside where the diode is soldered in, there should be a circuit reference number eg. D103, this would also be helpful

Posted on Jul 13, 2009

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Posted on Jan 02, 2017

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Loud cracking and zapping coming from tv,sounded like speakers,when it was first turned on.Was happening intermittently but now nothing.Checked power and fuse inside and nothing seems burnt or cracked


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Hi i got a gwm 2.8 TD not starting.check all fuses.tested injector pulse with diode test light and no pulse found.tested ecu with another gwm 2.8 and is starting with my ecu.


Not sure what a diode test light is, but I would check with a DC voltmeter for a 12 volt pulse. The pulse is very short in duration, so you might not see it. Check for spark at the spark plugs. If fuel pump is bad, you won't have fuel pressure. There are numerous reasons for an engine not starting.

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Check the diodes in the wires to the coils. Trace the wires from the coils, and they should join together into a single wire. In the junction of the wires, there is diodes. There is a possibility the diodes burnt out which will not allow power to the coils. My experience was when one burnt out and only one cylinder would run. I replaced the wiring and both cylinders worked fine.

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My 88 cbr 600 turns but wont start


the speed sensor next the starter motor
sends a voltage pulse to the speedometer.

If you can get at the connectors
just down from the speedo you can
check for this pulse.

Block the back wheel off the ground.
Unplug the connectors and hook
a volt meter to the pink/green +
and the green/black - wires
on the harness side not the speedo side.

Turn on the key and then
check for a 0-5 volt pulse
when you turn the wheel forward
slowly.

If you have a pulse the speed sensor
is likely okay and your speedo
circuit board is faulty.

If you get no voltage pulse then you have
to check the pulse closer to the
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and wires for faults.
No pulse can be a faulty speed sensor
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Have you checked the fuses well?

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1996 jeep grand chrokee turns over will not start, replaced cam shaft censor and ECM, and coil. distibuter cap looks bad has some white dust inside and contacts burnt. could it be that?


If you did not replace the CRANK sensor on the back side of the motor this most likely is the problem and a very common one at that.this controls spark and injector pulse,unlike the cam sensor which just shows when #1 cilyder is up.

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1990 montero no start. No power to open injectors, good fuel pump


Check the injector pulses with an osciliscope. If you arent getting a pulse check the ecu. I have cooked 2 of them. One killed my ignition but had good fuel. the second time it wouldnt open the injectors but had good spark. A quick check is to take the ecu out and take the cover off. then look for burnt electrical components.

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1 Answer

No sound, blue screen with blur of red, an green


the resistor overheated as a result of the diode or the capacitor went bad. Your gonna need to get a schematic diagram and find out what the part #s are as you cant just put in any type of diode capacitor or resistor. Also see what thay voltage source feeds and make sure nothing else is shorted.. Good Luck

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