got this tv from a friend who got a new one and didnt want to bother repairing this one.
he said it sometimes would just flash color patterns.
and sometimes it would just work
i figured it had some intermittent mainboard issue.
i stored it at home for a while before looking at it
when i plugged it in for the first time, i heard some popping noises
and then a big cloud of white smoke came out of the back of the tv!
i noticed the smoke didnt actually smell like anything. not like when an IC blows.
i unplugged it and took the back off and discovered one of the primary filter caps had bulged its cap and vented its electrolyte.
surprisingly, after plugging the power supply in (not connected to any other boards) a few times, the pops went from 2 pops every time i plugged in, down to one...
and surprisingly i saw it had 5v standby so i went ahead and plugged everything back in and the TV still actually works fine.
but it cant be good to leave those caps in there. so i took them out.
i haven't seen this brand before and cant seem to find the datasheet.
they are YST CD286B VENT +105c K8 450V68uF
the bulged one reads a little low on the capacitance and has an ESR of 1.1
the not bulged one reads normal capacitance and has an ESR of 0.55
can anyone point me out the datasheet for these caps to see what the original spec should be?
and more importantly, what are the good caps to replace these with?
could i just harvest some off of another power supply?
thank you!
he said it sometimes would just flash color patterns.
and sometimes it would just work
i figured it had some intermittent mainboard issue.
i stored it at home for a while before looking at it
when i plugged it in for the first time, i heard some popping noises
and then a big cloud of white smoke came out of the back of the tv!
i noticed the smoke didnt actually smell like anything. not like when an IC blows.
i unplugged it and took the back off and discovered one of the primary filter caps had bulged its cap and vented its electrolyte.
surprisingly, after plugging the power supply in (not connected to any other boards) a few times, the pops went from 2 pops every time i plugged in, down to one...
and surprisingly i saw it had 5v standby so i went ahead and plugged everything back in and the TV still actually works fine.
but it cant be good to leave those caps in there. so i took them out.
i haven't seen this brand before and cant seem to find the datasheet.
they are YST CD286B VENT +105c K8 450V68uF
the bulged one reads a little low on the capacitance and has an ESR of 1.1
the not bulged one reads normal capacitance and has an ESR of 0.55
can anyone point me out the datasheet for these caps to see what the original spec should be?
and more importantly, what are the good caps to replace these with?
could i just harvest some off of another power supply?
thank you!
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