LG 55LD650 weird problem

[hienton2]

My cousin tv LG 55LD650 has problem :It keep on /off 3 times then shutdown
Tv can not stay on.I upgrade firmware then it is ok .He bring it to his home and
hook to his cable box hdmi then tv goes wrong again sane problem.I want to
do upgrade again but tv say it has same version it can not upgrade.I did reset
eeprom but no fix.Can I make it back to old version. Anybody help to fix this?

Thanks

[hienton2]

Re: LG 55LD650 weird problem

I think the eeprom is corrupted again after first update when hook up the box