RP20CB20A Television Damage
Well I changed the fliback, tomorrow I will make the measurements of the case, then I replace the R 547 with an 82 K at one watt
I placed the R 547 of 82k and it burned immediately, if I generate high voltage because the screen was loaded.
friend: do not comment if I change the C515 and C514 ... if I do not change them look for a capacitor of (0.1mfx600v) polyester type and the solders between mass and pin8 ABL of the fli-bak ... you are sure that, change the fli -bak ..?. should not burn the R547 of 82kohm ... has q, measure on pin8 of the fli-bak q, voltage has when giving power ... put the voltmeter on DCVx1000v scale and the black tip to the tuner plate and the red tip to pin8 ABL of the fli-bak and measure q, there is tension ... if you do not give the reports q, you are asked not to save q, suggest ... pin8 of the fli-bak is where it is connected the R547 of 82kohm ... there measure ...
check or change the R550 of 10kohm ... it may be open ... change the diode D502 ... it may be coming out at high voltage x pin8 of the fli-bak x that burns the R547 of 82kohm ... don't forget that, The pin8 of the fli-bak is the other end of the high-voltage coils q, goes to the pacifier of the tube ... the pin8 has q, to be derived to mass through the C515 and C514 the R550 and D502 ... ok. ..
I have it working with the series, it does not turn on but I measure voltage on leg 3 of fly 111 v, on pin 8 at rest there are 104 v
that is wrong ... in pin8 of the fli-bak I should not have more than 8-15v ... or is the fli-bak damaged or you are not making the measurements of the R550 of 10kohm and see if it is within its value ... and the D502 see if it is not open ... and see if the capacitors C515 and c514 are in good condition ... I do not understand that (at rest there are 104v) you have q, measure q, voltage is on pin8 of the fli-bak when the tv is working ... not at rest ... if you don't check what, indicate in the previous comment and in this one ... I don't know where the prob is, ... check the components that, you I indicate and give a more concrete answer ..
It is possible that the socket that goes into the barrel of the screen is short and that is causing the ABL's resistance to burn. I see it as sulphated, what they think.
no friend: the socket of the tube has nothing to do with the tension that it has on pin8 of fli-bak ... are you sure that you are measuring on pin8 of fli-bak ... xq, yes on pin8 you have 104v the fli-bak is damaged ... do a test ... look for a resistance of 10k ohm 2w ... (brown black-orange-) and weld a tip to pin8 of fli.bak and the another resistance point you weld to knead ... and then measure to see if under the tension on pin8 ... answer if you understood me, ok
Friends I have not been able to work much on TV, for other commitments, but the r550 was open I changed it and it burned as soon as I turned it on.
well: I think, you have the fli-bak ... damaged or short ... because it is appearing more than 100v in the ABL pin according to comments ... and that is not normal ... you have to change fli-bak - R550 and R547 ... ok ..
Nikomena, I did a test that Miguel 86 recommended, because I saw the socket sulfated and insulated the cables that go from the fly to this and there is no heating of the R.
good buddy; Now you see if the TV starts well and comments. tension you have on pin8 of the fli-bak..you don't confuse with another pin of the fli-bak.. pin 8 is the ABL and that is where the R547 of 82k ohm is connected ... comment on what are the R q, since they don't heat ...
He changed the socket that goes to the trc and is working well. Thank you for your cooperation.
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