I have a weird problem with the CRT tv, it is Samsung Muti Bass. PCB schematic KS3A.
http://www.e-rusu.ro/scheme/Samsung/KS3A/34228.pdf
it started with a wrong connection. I fixed the flyback transformer but wrongly connected the CRT ground wire connection to degaussing slot on the PCB. (not knowing)
it worked without any issue for 3 days. then one evening it banged with a big startup sound, then the screen went complete white. after opening the back cover i realized the wrong connection.
now it is acting weird, if i take the PCB out, back cover open everything works as normal (but no more startup or turn off beep). the moment i insert the pcb below the crt into the slot it gives white horizontal lines. with no picture. as attached in the image below.
when I keep the PCB out, like this it works just fine. Problem is that i can not put the back cover. i doubt is the degauss circuit us gone but looks like it is fine the PTC is also ok. It gets hot when working for some time.
http://www.e-rusu.ro/scheme/Samsung/KS3A/34228.pdf
it started with a wrong connection. I fixed the flyback transformer but wrongly connected the CRT ground wire connection to degaussing slot on the PCB. (not knowing)
it worked without any issue for 3 days. then one evening it banged with a big startup sound, then the screen went complete white. after opening the back cover i realized the wrong connection.
now it is acting weird, if i take the PCB out, back cover open everything works as normal (but no more startup or turn off beep). the moment i insert the pcb below the crt into the slot it gives white horizontal lines. with no picture. as attached in the image below.
when I keep the PCB out, like this it works just fine. Problem is that i can not put the back cover. i doubt is the degauss circuit us gone but looks like it is fine the PTC is also ok. It gets hot when working for some time.