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TVs

Tv-daewoo model cn-001a no letters are seen.

marioleonardo
hace 6 años
hace 6 años
THIS TV IS SEEN AND HEARING WELL, BUT THE LETARS ARE NOT SEEN FROM THE MENU OR VOLUME OR NOTHING. I CHANGE MICRO DW 863228V AND THE EPROM. I REQUEST YOUR HELP PLEASE.
miguel 86
miguel 86
2.160
hace 6 años
hace 6 años
[quote] Verify transistor and test with another crystal that is near the micro Q701 / Q702: C945C-Y [/quote]
marioleonardo
hace 6 años

I tried those transistors and the crystal and it's still the same

Responder
miguel 86
miguel 86
2.160
hace 6 años

Hello, there the colleague explains you better in graphic verifies there has to be the problem, transistors or their resistance, you can have cut or devalued, because you changed micro and memory tube some download.

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franciscovallarta
hace 6 años
hace 6 años
check that the mic reaches the vertical and horizantal synchronization pulses, if they do not arrive go back check the transistors track interrupted etc.
marioleonardo
hace 6 años

Thank you colleagues for the plan that happened to me. I had not told him the TV was brought from another technician, because I followed the plan and found a bridge between RC 735 and RC 791. CASE RESOLVED AND THANK YOU FOR YOUR HELP. It seems it was a mistake of the other technician.

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miguel 86
miguel 86
2.160
hace 6 años

Good, greetings

Responder
nicomena2015
nicomena2015
9.501
hace 6 años
hace 6 años
Hello colleague: change transistors Q701 and Q702 ... Q701 reaches its base a signal from the hetaer hor, ... Q702 reaches its base a signal from the vertical ... the two transistors have q, send the hor, and vertical signals to lc701 pin21 and pin22 ... so that the digitization on the screen is activated ... either one of them q, fail there will be no typing on the screen or menu ... I leave you an image for q, check the highlighted components ... greetings! https://ibb.co/bUgnm7
marioleonardo
hace 6 años

It is already resolved. were those resistance rc 735 and rc 791 it seems that the other technician joined her with tin by mistake.

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