karthi1000
Active Member
hi friends i am using vu tv55k160 for the past 14 months with no issues
suddenly on august 1 when i switch on the tv tv started then smoke came and no picture.. i switched off every thing pull off the mains cable from socket and contacted vu service
As usual by any indian company first they asked is it under warranty or not . I said warranty period is over .Then they show their VU colors, no service men turned on me for 5 days:sad::sad:
then i decided to do myself
first i Google it and found few tips
my TV has sound and no picture ,,,,so main board mostly ok
my TV has momentary picture showing vu logo at the start and then no picture
so back light is ok
then THE FLASH TEST on TV , ie try to flash a torch light at an angle to see any picture while the sound is playing ...Try to see some picture or letters,,,,, i can make out the picture faintly
then the problem might be in power supply to back light leds Most common power supply failure will be in capacitors and diodes i look for capacitors since smoke came
then i opened the back panel
here r the pics
power supply board
bulgde seen in the capacitor
comparison of new and bulged capactitor
I traced the culprit as the capacitor 450v 82 mfd which shows the bulging and also ticking noise coming from it when power is on which means internal arcing
i changed that myself WITH MY little soldering knowledge and Google.. And reassembled every thing ,...... voila tv is again alive
its my luck my TV is alive again plz check service of vu television and then decide to buy the TV,,,,,,still my rating as 9/10 for picture 10/10 for vfm if every thing goes right.. Plz take maximum warranty period ie Extended warranty which i missed
i have posted this for knowledge only , iam not expert in electronics
i have done this to bring my tv alive due to my frustration which is good or bad i dont know
total cost100..... 50 rupees for capacitor and 50 rupees for my assistant for coffe and snacks
hyeah:hyeah:hyeah: total cost estimated by vu people for inspection only is 1200:sad:
suddenly on august 1 when i switch on the tv tv started then smoke came and no picture.. i switched off every thing pull off the mains cable from socket and contacted vu service
As usual by any indian company first they asked is it under warranty or not . I said warranty period is over .Then they show their VU colors, no service men turned on me for 5 days:sad::sad:
then i decided to do myself
first i Google it and found few tips
my TV has sound and no picture ,,,,so main board mostly ok
my TV has momentary picture showing vu logo at the start and then no picture
so back light is ok
then THE FLASH TEST on TV , ie try to flash a torch light at an angle to see any picture while the sound is playing ...Try to see some picture or letters,,,,, i can make out the picture faintly
then the problem might be in power supply to back light leds Most common power supply failure will be in capacitors and diodes i look for capacitors since smoke came
then i opened the back panel
here r the pics
power supply board
bulgde seen in the capacitor
comparison of new and bulged capactitor
I traced the culprit as the capacitor 450v 82 mfd which shows the bulging and also ticking noise coming from it when power is on which means internal arcing
i changed that myself WITH MY little soldering knowledge and Google.. And reassembled every thing ,...... voila tv is again alive
its my luck my TV is alive again plz check service of vu television and then decide to buy the TV,,,,,,still my rating as 9/10 for picture 10/10 for vfm if every thing goes right.. Plz take maximum warranty period ie Extended warranty which i missed
i have posted this for knowledge only , iam not expert in electronics
i have done this to bring my tv alive due to my frustration which is good or bad i dont know
total cost100..... 50 rupees for capacitor and 50 rupees for my assistant for coffe and snacks
hyeah:hyeah:hyeah: total cost estimated by vu people for inspection only is 1200:sad:
