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Tube TVs
daewo 20 "you only see colored lines
Televisor Daewoo CM-537
Televisor Daewoo CM-537
6 Soluciones
16 Reparaciones
19
hace 5 años
hace 5 años
good night friends I commented the problem that I have with a TV daewoo chassis CM-537 which came to me because it did not turn on and looking at the plate I found that in a corner it was broken so I made the connections again and the TV turned on but only they see 3 lines of colors red green and blue. the tv turns on normal the audio is heard perfectly. If you could make me horny, this is the first time I have this fault.
I attach an image ..
5.308
hace 5 años
Just like this try with another tube ... if it gives you that possibility ... but it happens to another client ... the cost of the tube + technical time man $$$$ does not give
17.741
hace 5 años
Hi. For me it is not the tube.
These lines correspond to vertical stage malfunction with an outdated convergence. There is no reflection.
That is, in my opinion, the vertical IC is burned or not fed, or the yoke open or short.
See the convergence rings for their position, these are marked white or yellow.
Check the print well clean and good light and magnifying glass. The plate may be broken elsewhere.
5.308
hace 5 años
hace 5 años
I think the tube suffered a blow ... I will not have vertical + the cannons moved the deflection lost the opening width
hace 5 años
hace 5 años
First check welding in yoke socket (vertival), this is why there will be no deflection vert. , but then there may be a problem on the screen apparently from falling.
hace 5 años
For the latter: "image in the form of a blue trapezoid, with delay lines and out of focus" I measured the cathodes on a tube socket: if the red and green are around 100v and the blue one is much lower, you may have a problem in This cathode. If you know how and you have to peel it (with high tension). You can also try another tube.
17.741
hace 5 años
hace 5 años
You continue with the problem mentioned above. VERTICAL circuit.
Check the welds in this area again and most of all the form as I said before. Upload photo of the image it shows. It does not report tensions on the vertical posts and the yoke impedance.
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