21PL Samsung TV with excess of + B in 175volt
with respect to the R414 you must ensure that the value of the cr405S is 4700pf ... or ... 4.7nf x 400v of polyester ... you must also ensure that the DZ402 of 5.6v is not short. The CR409s of 470pfx2kv should also be checked or replaced by a polyester if it is damaged or open ... (the CR404s is of fundamental importance) ... since between the (CR404S of 680pfx2kv) and the (CR405S of 4700pf ) form a capacitive divider and cut the pulse width hor, q. It is more than 1000v peak ... if all that is ok .. change the CR404s of 680pf x one of 470pfx2kv ...
and test if the R414 no longer heats ... you must ensure that the R414 is 15kohm x 2w ... the R414 should not take so much temperature ... in relation to q, in stand-by there are 175v that is not normal ... because the C812 and C813 in the + b are maximum of 160v ... it is rare that, they are not burst ... notice if your voltmeter takes the voltages well ... if you still noticed the prob, of the 175v in stand-by try to change the R834 and R835 of 47kohm of 2w .. .x two R of 22kohm of 2w ... and you see if the stand-by voltage drops ... if the prob still follows, from the stand-by in 175v we will see in the primary of the source something is not right ...
Hello friend nicomena20 I had not written because in Venezuela there is the serious problem, I had electricity and they cut them every so often and even for days, now they cut it very little, well friend I tell you that I already solved the problem of burning the R414 thanks to you and the others who contributed their grain of sand, I had changed the C404 from 680pf to 2kv and the C405 from 4700pf to 400v for new ones but it turns out that those new ones were in bad condition because I bought new ones again and now if see the image well and the R no longer burns or heats and with the voltage of 175 in stambay
And with the voltage of 175 in stambay, I chose to change the filters for about 250volts so as not to have a problem of getting damaged faster, I have the television under test for a week and so far it has worked perfectly without any problem, EYE: only in Estambay there are 175 and when you give the order of low power immediately to stable 120vol, who think friend, and as I repeat you already have a week working without problem, the filters do not get hot or the resistance either, thanks friends for help me to solve this fault, especially to nicomena20 without less appreciating others