Re: Visio VO47L FHDTV30A No Power, Need Schematic

OK, I pulled the diodes out of circuit and they checked out OK.

The snubber capacitor measured 68.4 ohms

The zener diode ZD725 measured 898 Ohms with pos lead on the cathode side and neg lead on the anode side, and 308 Ohms with the leads reversed.

The zener diode ZD902 measured 1602 Ohms with the pos lead on the cathode side and neg lead on the anode side, and 459 Ohms with the leads reversed.

As you can see in the attached photos, I found some other issues. 2 burnt resistors,...

Re: Visio VO47L FHDTV30A No Power, Need Schematic



Here is an image of the back of the board, and also images of the connector on the power board.
The snubber capacitor measures 69.5 ohms.
I am not familiar with the band on the diodes whether that is the flow through side or the stop/check valve side.


Meter set to Diode.
With positive on the band side, negative on the opposite side I got the following values and then reversed.


Band side to the left(POS) and then reversed Band side to the...

I have a Visio VO47L FHDTV30A that will not power on. If I hit the power button on the side of the TV, not using the remote, the Visio light on the front of the TV does not indicate any power. I am very familiar with using a volt/ohm meter having done in plant electrical and house wiring. I am however, a novice at electronics but have always had an interest in learning the craft. There is power to the TV, and the 250 volt fuse is not blown. As you can see in the attached pictures, there appears to be a blown capacitor. Would that be enough to cause the no power condition.
Can anyone point...

Re: New Members - please post your introductions here

Hey Everyone. Paul here. I've always had an interest in learning electronics, so I'm glad I found this forum. I know how to use a volt, ohm meter. I came to this site hoping to get some help with a Vizio TV with no power. I will post that problem on a new thread. Thanks in advance for everyone's help.