Hi,
My litte old CRT TV
https://www.radiomuseum.org/r/clatronic_tv_486s.html
got a problem with horizontal deflection.... i hope i find information how to repair....
does somebody have a schematic for this model ?
thank you,
chris
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Hello Chris,
Check the power supply first,then the capacitors near the flyback transformer (C613,C614) the coupling capacitor (C630) the flyback transformer could be faulty as well.
tj
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dear TJ,
thank you so much for the help! I really apprechiate it !! :)
The power supply is okay - i use a 12V 3A Lab Voltage source, current draw ist about 0,4A in operation.
I found C613 and C614 - i can check them next week using a cap meter.
I couldn't find C630 - did you mean C603 maybe ?
I suspected C619, next to Q602 (D880 transistor for "horizontal out") ....
Do you have a schematic for this model?
here some fotos of the board and the "service manual" i found on the net:
https://cloud.technikum-wien.at/s/xXzsBcXXACebAtX
best regards,
Chris
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Hey,
Yesterday I replaced C619 with a new 4,7 uF 400V Cap and the horizontal deflection works !
:-) :-)
best regards,
chris
3
well, someone is available to guide Chris that's great these items are rare now and to repair them requires great attention.
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12V 1.5-2A +1
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thanks!
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