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Thomson TV chassis ICC19-2H

R

rik

Jan 1, 1970
0
Hallo

I am working on an Thomson TV set chassis ICC19-2H with following problem.
When started first TV trie to start 3 times and than goes in standby mode.
I turned the screen voltage completely down on CRT (EHT) and than i got a blue screen with no sound.
I replaced the CRT but the result is the same.
can someone give me advice on this problem.

Thanks in advance

Rik
 
B

bwana

Jan 1, 1970
0
Hallo
My problem is solved.
After a long search i figured it out wath the problem was.
I found out by comparing the 3 TV RGB Amplifiers (TEA5101B, IB01,02 & 03) on the picture tube PCB there was a diferance reading in recistance between pin 1 and all the other pins.
I replaced the bad one with no result :-(
But after a beter look further on the board there is a small resistor RB07 10R that feeds the power to the amplifiers pin 2 VCC low was open circuit.
Replaced bad one and know TV is working fine again.
I hope you can use this information.

Rik
"rik" <[email protected]> schreef in bericht Hallo

I am working on an Thomson TV set chassis ICC19-2H with following problem.
When started first TV trie to start 3 times and than goes in standby mode.
I turned the screen voltage completely down on CRT (EHT) and than i got a blue screen with no sound.
I replaced the CRT but the result is the same.
can someone give me advice on this problem.

Thanks in advance

Rik
 
A

Art

Jan 1, 1970
0
Very good troubleshooting and repair.
Hallo
My problem is solved.
After a long search i figured it out wath the problem was.
I found out by comparing the 3 TV RGB Amplifiers (TEA5101B, IB01,02 & 03) on the picture tube PCB there was a diferance reading in recistance between pin 1 and all the other pins.
I replaced the bad one with no result :-(
But after a beter look further on the board there is a small resistor RB07 10R that feeds the power to the amplifiers pin 2 VCC low was open circuit.
Replaced bad one and know TV is working fine again.
I hope you can use this information.

Rik
"rik" <[email protected]> schreef in bericht Hallo

I am working on an Thomson TV set chassis ICC19-2H with following problem.
When started first TV trie to start 3 times and than goes in standby mode.
I turned the screen voltage completely down on CRT (EHT) and than i got a blue screen with no sound.
I replaced the CRT but the result is the same.
can someone give me advice on this problem.

Thanks in advance

Rik
 
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