Do a reset to this set, and try again. To make it a hard reset, just unplug the TV from AC mains wall socket, and re-plug it back after 15 minutes or so. This procedure will make it a hard reset. If you want to make it a system reset [Factory Reset]; you have to enter its service mode option, and select the factory reset option. If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Service mode entry, adjust and exit procedure to many popular brand TVs are given. Never forget to exit the service mode, after all adjustments have been done.
SOURCE: proscan 26L30QD picture and sound went off
You need to take this unit in for servicing for failed components.You can contact PROSCAN at this website.www.oncorpus.com.Go to the customer support section and ask them where you can take you unit for servicing. You can also call their customer support telephone number at. 1-888-977-6722. I hope this information helps you with your problem.
SOURCE: Proscan TV
with no picture and no audio i would more than likely suspect the main AV Board needs replacing.
Take the back of your tv and get the part number of the AV board ( THE ONE WITH THE INPUTS AND SCART SOCKETS) then Google or Ebay for a replacement.
95% thisd will cure your problem.
Hope this helps
SOURCE: My 3 year old Proscan 42" LCD TV picture suddenly
On the far left and right inside the back on panel are inverter boards. Replace or look for capacitors buldged, swollen, or cracked on their tops. Replace defective caps with original value and make sure replacements are 105 degree for longevity. Common problem, let me know if this helped.
Sam Farrell
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