Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems.

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Francesco Messineo
 
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Default need schematic

Hello,

I'm looking for the schematic of the TV set Inno-Hit TVC 2140MS. It keeps
killing the horizontal output transistor each two or three power on.
Once powered on it stays on for days w/o problems. I think I'm lost
w/o a schematic diagram.

Thanks in advance.

Francesco IZ5DWF
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Dario2
 
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Default need schematic

Francesco Messineo wrote:
Hello,

I'm looking for the schematic of the TV set Inno-Hit TVC 2140MS. It keeps
killing the horizontal output transistor each two or three power on.
Once powered on it stays on for days w/o problems. I think I'm lost
w/o a schematic diagram.

Thanks in advance.

Francesco IZ5DWF


A diagram will not help too much. Check the capacitors around FBT. If
they are OK probably your FBT needs to be replaced.
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Francesco Messineo
 
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Default need schematic

Dario2 wrote:

A diagram will not help too much. Check the capacitors around FBT. If
they are OK probably your FBT needs to be replaced.


Well, I already changed all capacitors arount it. I'm going to change all
capacitors on the power supply part. I don't know why a diagram shouldn't
help. What FBT fault could blow the line output transistor only during
power on and not during hours of work?

Thanks

Francesco IZ5DWF
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