VIZIO VO47L FHDTV10A No Video

[gethooked]

Re: VIZIO VO47L FHDTV10A No Video

First off....Thanks again for taking the time to help, bud.

I purchased the 10A fuse because...

I jumped the fuse on the Master and mounted the inverters back on the set, and the TV is working great! I left it on for an hour and no overheating and perfect picture.

I do not now know how this is possible...... The U3 Regulator only has a 2.463V input and 1.025V on the output Pin.

I read a similar post where you recommended the 10A fuse for repair on the inverter...

I myself use this for repair:
http://www.digikey.com/product-detai...2320-ND/700757

I figure that if I replace all the capcitors on the secondary side of the P/S and the inverters, along with the fuse on the master inverter, I may be in luck.

Should I just go ahead and order the MOSFETS for the master inverter as well?

[budm]

Re: VIZIO VO47L FHDTV10A No Video

OK, I missed the jumping of the fuse and the inverter functions OK, use 10A fuse if the original is 10A I do not recommend 10A fuse unless the original is 10A, no need for the MOSFETs then.

[gethooked]

Re: VIZIO VO47L FHDTV10A No Video

The original fuse on the inverter is a 10A.

Do you still think the MOSFETs could possibly be shorted/damaged?

Once the the parts arrive this week, I will solder everything in and report back.

[budm]

Re: VIZIO VO47L FHDTV10A No Video

10A is OK then.
Since you are able to get the backlights to come on and function OK, then the MOSFETs are fine.

[gethooked]

Re: [UPDATE] VIZIO VO47L FHDTV10A No Video

UPDATE

• I have just replaced all capacitors on the secondary of P/S and all capacitors on both inverters.
  
• I have also jumped the fuse on the master.
  
• TV is on and running great.
  
• Just a little buzzing (very subtle) from time to time on the master and slave inverters.

However - I am still seeing:

• 2.44V on the (Input Pins) @ Transistor O27 and Regulator U3
  
• 11.8V on the (Adjust and Output Pins) @ O27
  
• 1.02V on the (Output Pin) @ U3
  
• Both the (5V and 12V) fuses on the main-board have correct power on both sides of the fuse.

Why is the TV functioning and why do I have more output than input on the transistor and regulator?