tv sony model kv21rs50 / 8 without image
Chassis number I do not find more than these 1-659-850-15 171159415 a-1297 77-a TCI-A72 The screen is not because I removed the socket and measured voltages but still does not increase a little voltage remain in the same
I do not get angry, we are here to add ... I just indicated that first you have to do the tests and measurements and then take the most appropriate measure or procedure
Look, I indicate the joansoler solutions because they are practical and if you put interest you learn to verify the failures, you just have to study, it has helped me a lot to diagnose faster ... I put them to the colleagues so that they go straight and go LEARNING
Diagram and manual
https://elektrotanya.com/sony_kv-21pm1_chassis_ba-3.pdf/download.html
Jungle number CXA1870S of this integrated signal rgb and ik come out but replace it thinking that this is bad now what I am doing is checking surface resistances
Friend, check the source to start the source only if the source starts you and measures all the voltages, your problem would be the main card, I suggest you ask your question in another post since we are focusing only on the sony tv of the old ones
Okay, I already did it in your post and nobody answers ... if someone answered I would be grateful for a greeting to answer