TV ADMIRAL MOD.TG-2900-A vertical problem
according to PTTM01 chassis- coinsidents with the components q, mention check or change the C304 of 100mfx60v ... also change the D303 x 1n4007 ... change the R308 of 1ohm x 2w ... it combines changing the filter capacitors ... 470mfx35v C421 ... this capacitor goes with the positive ground as it filters the 16v-negative q, goes to pin4 of the vertical lc ... also change the C411 of 1000mfx35v q, filters the positive voltage of 16v + q, goes to lc vertical pin2y6 ... comment results ...
Hi Niconema201
Pin 1 there are 16v
Pin2 there are 25v
Pin 3 there are 2.4v
Pin 4 there are 0v
Pin5 there are 13.9v
Pin6 there are 26v
Pin7 there are 17.4v
A little while is going well and then it starts to shake and it starts to shrink from the top since a lot of fatty friend
hello friend: you are taking the voltage measurements badly ... on pin 1 it can't be done 16v ... it would burn quickly ... and on pin 7 neither ... pin 1 is the input of the excitation signal q, it comes from the jungle..50-60-hz ... pin 7 must be about 2.5v ... the DCV voltages are taken ... negative from the tuner's mass voltmeter ... red tip on the pin to measure ... DCVX200V ... take the xq measurements back, you are giving wrong measurements ...
friend: you are missing voltage on pin2y6 ... have q, have 15 or 16v + positive ... I suggested in the previous comment that you will change the C411 of 1000mfx25V ... and check the R405 of 0.22ohm ... yes It is as scorched may have lost the value of 0.22ohm ... you change it if there are doubts ... in the C411 deven haver 16v + ... if there is no change said C411 ... OK
Hello friend, I already changed the C411 of 1000mf x25 and nothing now I am going to change the R405 this goes to the D403 and this diode after a while starts to warm up a lot
Another thing instead of o.22homs I put 1hom and open the whole screen but cm tedije heats the diode a lot I will look for it so I put the same value of R405
good. Check or measure that diode D403 well ... measure it directly and imbersa and see if it does not leak ... if there are doubts you change it x one of the same characteristics .. HER154 ... see if it has the original diode HER154 .. .o is another ... and if it goes well with an R of 1ohmx2w try to keep the image on screen ... keep an eye on whether the R405 gets very hot ...
Hello Buendia, I tell you, my friend, the problem of them fails was the R405 and the D403 I put the original HER154, there is no more warming up after changing these components, if the 16v arrives at pin 2 and 6
I thank you from my heart for the help that gave you thanks to you ... see you soon
Well buddy: I'm glad that you have solved the fault ... "congratulations" and do not forget to rate or rate and give as (solution accepted) in the score box under my first comment ... so it remains in the file of solutions for other colleagues ... ok ... greetings !!