Riddled TV Repair Forum
Service Menu and Manual Schematics
 
   
 FAQFAQ   SearchSearch   RegisterRegister 
   Log inLog in 
JVC plasma pd-42wv74 no video, but audio is fine    
Post new topic   Reply to topic    Riddled TV Repair Forum Index -> TV Repair
 
Author Message
jonwal1



Joined: 16 Aug 2009
Posts: 2
Location: United States

PostPosted: Thu Aug 20, 2009 2:29 am    Post subject: JVC plasma pd-42wv74 no video, but audio is fine Reply with quote

This is an older unit with the seperate media receiver. If the unit is unplugged overnight it will display for about 30 seconds before it turns off. When this happens I get a slow blinking power light. I checked all the fuses and removed the power board to check for cold solder joints. One thing I find odd is i have 123 vac coming in at the main fuse, but when I power it up I only have 120 for a split second then it cuts down to 67vac.

I tried to isolate the problem by hooking up the dvi output of the reciever to a known good monitor when I powered it up today. That showed the same results. I had about a minute of the screen working on a known good monitor followed by a loss of video (signal). The audio worked the whole time.

I also hooked a dvi dvd player up through the display after that and I could not get any video. Every time I did that I got the blinking green light. Strangely if I hooked the 42" display to the receiver I would not get video, however I did not get any blinking light either. I may take the cover off the reciever unit tomorrow and see if any caps look swolen or if I can identify any other irregularitites.
Google

PostPost subject: Advertisement

jonwal1



Joined: 16 Aug 2009
Posts: 2
Location: United States

PostPosted: Tue Aug 25, 2009 5:48 pm    Post subject: Reply with quote

The tv will power up fine as long as there is not a dvi cable plugged in. To make sure it was not the receiver I plugged a seperate dvd player through the dvi cable into the tv. The tv had audio, but as soon I plugged the dvi into the panel it shutdown and led8004 came on.
Display posts from previous:   
Post new topic   Reply to topic    Riddled TV Repair Forum Index -> TV Repair All times are GMT - 6 Hours
Page 1 of 1

 


Disclaimer: All information provided by RiddledTV is strictly for information purposes only. Please observe all warnings displayed on your electronic
devices. This information should only be used to help diagnose work, and all service should be performed by a qualified technician.
Privacy Policy       Copyright © 2020 RiddledTV.com       Advertise on RiddedTV.com