Tv Daewoo Model 20V8SSFG Chassis CN 001L 001G
Televisor RCA TV
Televisor RCA TV
Friend and colleague makesi2013 I thank you for your time attending to your suggestion I mount another CRT and the only change there was, instead that having a greenish background now has it bluish but the image is distinguished as covered by a cloud. I look forward to another companion recommendation and thanks again
good morning companion nicomena2015 thanks for your recommendations, I did everything you suggested I explain: I tested with DVD and there is no improvement, I measured voltage at IC 101, pin 12, 8v, pin 33, 0v, I measured on pin 8 of the FB in DC 4v in AC equal 4v. I couldn't do the contrast thing because you can't clearly see the menu on the screen. Thank you for your attention mate I await your recommendation.
if it is the CN-001G- chassis on pin 33deves have about 4v ... if it is at 0v check the R520 of 47kohm q, the 5v line is connected and the other end of the R520 is connected to pin33 and see if it is not open, ... if it is well check the Q501-A1266- if it is not damaged or short ... it is a trans, PNP ... measure if the 5v are in pin40 of lc101 ... in pin33 it has q. haver positive voltage ... between 3 and 5v ... if the 4v does not appear on pin33 ... take an R of 10kohm ... one end of the R of 10kohm you connect it to the 5v line and the other end of the R of 10kohm you connect it to pin33 and see results
Nicomena2015 companion thanks to his recommendations to measure tension in the ABL to see that there was none in pin 33 of IC 101 I began to check with a magnifying glass, all that line from the FB and reaching pin 33 of IC 101 I see that D509 and the C713, in one part they were scraped that part and I see that they follow different lines, but in that part they were joined by welding, I cleaned it I put new welding and! That was the damage! I measured voltage on the ABL 3.5 v on pin 33 3.1 v the color demodulators in collector 140--145--150 respectively. A fellow question .......... follow
When turning on the TV the ABL measures 4 v but then goes down to: 3.5, 3.4 then goes down to 2.6 v stays there between 2.6 2.4 in small oscillation, is that ok or is there something that is not working well? a bad filtration for example. Fellow pays my respects and recognition for your valuable help, it was thanks to you that I was able to take out this damage. I will not close giving the best solution waiting for your answer to this question I asked, but you know that you gave me the best solution.
Hello colleague: ... if you already have voltage on pin33 and the TV has an acceptable image, you can say that, you have solved the fault ... it was prob, ABL ... as I suggested ... while the pin33 does not go down to 0v that line works well ... on my part (congratulations colleague) x the achievement .... do not forget to value my contributions as (solution) in my first comment ... this way it is in the file of solutions for other colleagues as this fault was repaired .... luck ... greetings !!!
Greetings fellow and again thanks for your help, it was very important. I already gave you the best solution to your first suggestion because that was the case. Luck.