My Panasonic WV-CM1020 Television yoke coil is burnt when i removed the coil I saw one of the coil, i mean the bottom coil was burnt and that coil is unavailable in india,will there be any other problem apart from yoke coil, how can i repair yoke coil.
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If the T.V. itself got wet you need to remove back panel to insure it dry completely. If there is anything that looks as though it is burnt on it then do not try plugging in because it will only do more damage. if everything looks to be normal and there is nothing looking as though it is burnt or dicolored then you need to take it to a repair shop or figure out what is burnt or discolored and find that part and replace it yourself. If it is the Antenna then you will problably be better of replacing it because tv antenna are designed to have direct lines meaning once a line has been cut or burnt or damaged it cannot be fixed and would be cheaper to replace the entire wire.
The power panel is faulty that is why the television is not getting power from the socket.
Turn to the back of the television, then you unscrew the screws, after doing that, trace the cord that is plugged to the panel it is connected to on the inside part of the television, you will se it attached to a panel, the panel is what you are to check.
It will either have bad capacitor or will look burnt, so either ways, you try to replace the power panel and it will be in good condition once again.
Less power output from the internal SMPS; usually 110v, may less. Horizontal output capacitor may leaky. Horizontal output transistor fault may occur. In rare cases deflection yoke assembley fault.
If the picture is stamped size; suspect the power supply. If the picture is less in width, suspect the above said capacitor, and the lenearity coil fitted on the main board.
Hi, It can be deduced from your problem that the fuse located inside the adapter is burnt out,This occurs as a result of excess voltage which is passed into the adapter,the fuse in the adapter tends to protect excess voltage from going directly into the TV unit,
Hence,when excess voltage gets into the adapter,the fuses burns out and voltage cannot flow into the TV UNIT,
The solution is to take apart the adaptor and replace the cylindrical fuse which is burnt out,or as a better alternative,replace the adapter in order to obtain optimum performance in terms of protection of your TV unit.
CAUTION: To prevent damage to the CRT phosphors, immediately turn down the brightness so the line is just barely visible. If the user controls do not have enough range, you will have to locate and adjust the master brightness or screen/G2 pots.
A single horizontal line means that you have lost vertical deflection. High voltage is most likely fine since there is something on the screen.
This could be due to:
Dirty service switch contacts. There is often a small switch located inside on the main board or perhaps accessible from the back. This is used during setup to set the color background levels. (On some sets, this is located on the CRT neck board and may be a jumper plug or other means of selecting service mode - not an actual switch.)
When moved to the 'service' position, it kills vertical deflection and video to the CRT. If the switch somehow changed position or got dirty or corroded contacts, you will have this symptom. Flip the switch back and forth a couple of times. If there is some change, then replace, clean, resolder, or even bypass it as appropriate.
Bad connection to deflection yoke or other parts in vertical output circuit. Bad connections are common in TVs and monitors. Check around the pins of large components like transformers, power transistors and resistors, or connectors for hairline cracks in the solder. Reseat internal connectors. Check particularly around the connector to the deflection yoke on the CRT.
Bad vertical deflection IC or transistor. You will probably need the service manual for this and the following. However, if the vertical deflection is done with an IC, the ECG Semiconductor Master Substitution guide may have its pinout which may be enough to test it with a scope.
Other bad parts in vertical deflection circuit though there are not that many parts that would kill the deflection entirely.
Loss of power to vertical deflection circuits. Check for blown fusable resistors/fuses and bad connections.
Loss of vertical oscillator or vertical drive signals.
The most likely possibilities are in the deflection output stage or bad connections to the yoke.
Is there a transformer? Check to see that there is AC on the primary & secondary of the transformer.
If no AC on the secondary, then the transformer is bad. If AC ok on the secondary, then look for a bad rectifier diode/module and/or regulator module. There might also be fuses on the DC side of the power supply.
If the unit is completely dead, it's most likely a power supply issue.
Please let me know if I can be of further assistance to you.
Take a look at the sawtooth waveform produced by the vertical oscillator. There's probably an IC that's producing it. I'd suspect there is a capacitor that is out of tolerance in this circuit on it's way to the vertical deflection yoke.
Hope this helps.
You need to find the sawtooth waveform which is generated by the vertical oscilator. There will be a pin on the IC that should show the waveform. If it is not there, then the IC is bad. If it is there, then there is probably an amplifier stage prior to the deflection yoke that has a problem. Either way, the sawtooth wave is not getting to the deflection coil which is why it is rolling. Ther might also be a coupling capacitor which has opened up.
Hope this helps.