Re: Vizio VO47L FHDTV10A No display

OK, so I replaced the 450V capacitor just to be sure and Im still getting the same voltage readings, 165 off and 390-ish on on the positive side and 0/0 on the negative side. Im guessing that either Im reading the voltage wrong or theres something else wrong with the system.
Can anyone help me with the 'reference ground' on this PSU btw, so I know Im at least reading the voltages correctly.

Re: Vizio VO47L FHDTV10A No display

Ok, I retested the capacitor using the metal shroud as a ground (couldnt find a 'reference ground') and it gave me more stable readings. The primary side went from 165 with the tv off to 395 with it turned on, but the secondary side was zero volts on or off. Bad Cap?
Just as a side note, if I take voltage from the metal shroud to chassis ground I get 65vac. is that normal for the framework to be energized?

Re: Vizio VO47L FHDTV10A No display

On the big capacitor I'm getting about 160vdc when I turn the tv on, then off then read the voltage, but it drops off as im reading it. With the TV on Im getting a solid 338vdc input to it (I assume its the input side). On the output side, on or off I get 64VAC. BTW, again, Im using an electricians meter, so voltage might be +/- a bit.

Re: Vizio VO47L FHDTV10A No display

No 24v on the terminals with the cables unplugged.
Im getting around 3 volts at the power supply from the PSON terminal on the cable from the main board
Where can i find the main filter capacitor, or is that the part I highlighted?
*again, sorry for my lack of knowledge on the electronic parts
Thanks for the response btw.

Re: Vizio VO47L FHDTV10A No display

Im having a problem with the same model television. The caps on the master inverter board were bulged and the tv has no picture (or sound as far as I can tell). I get the typical orange on standby and white on power up on the logo. I replaced the bad caps for matching units, soldered in an external fuse to replace the damaged one on the inverter board. The problem Im having now is Im no receiving 24 volts from anywhere in the system. I pulled the board off the frame, hotwired in a ground pigtail and re-read the voltages, and Ive traced the line...

Re: New Members - please post your introductions here

Hello all. My name is Robert Patterson, and I would like to say how much I appreciate this forum as a resource for information on tv repair and theory. Im not a professional TV guy, I happen to be an electrician by trade, and I do some tv and computer repair as a hobby. I pick up non-functional stuff from swap meets and thrift stores, repair them, and give them out to friends and family who normally wouldnt be able to afford them on their own. Plus, its a bit fun; I like to tinker. So, thanks again, and im looking forward to...