Another Vizio VW42L Tv out of the land field for now.

[frankramiro]

Hi guys; a success repair on Vizio VW42L that someone dumped it on the side of the street it started to acting crazy,see video.
.youtube.com/...amp;feature=youtu.be

i disconnected the ty control key pad on the board and re-soldered all pins and it fixed that, but it was hard to control the tv and i did not have the remote control,
also the screen started to flick special if i did lower down the black light adjustment kinda showing random White Black blue red screens to stop it had to shut down
sometimes it would work ok.
then i first started to check the power sup caps all checked ok and checked the Inverter board caps they seem a little bit bulge but they checked good ESR but since i had to order a new remote control so i ordered also 4 - 470uf 35v 105degrees caps,i took out the inverter boards and put in the new caps fairly easy job,closed tv and so far so good tv looks good after 2 hours of working,
note that when i checked the old caps in circuit with my cap-analyzer 88A the ESR was normal,when i tested them out of the circuit they were dead and also tested dead with my Fluke DM, i don't know if it was the heat applied to desoldered them
for now another tv kept ou of the land field,keep my finger crossed.

[vtech]

Good job

[Guest]

[SDS]

Hi,

Always unsolder at least one pin of electrolytics for ESR measurements, most of the time you'll have at least 2 electrolytics parallel on a given power rail, often one will fail but not always the others (Due to peak current ripple or temperature differences), if you measure them parallel the ESR reading will be lower than that of the best capacitor in the bunch.
The silicon is just a mechanical precaution, so if the TV is not going to travel the world no worry!