Have TV Questions? Ask a TV Technician
Hi, my name is ***** ***** I will do my best to help you today. To make sure I don’t miss anything, please give me a minute to review your question.
- Do you keep getting program sound from TV internal speakers?
- What video devices/ sources (such as cable box DVD player etc) are connected to TV and does the problem occur on all video input sources?Thank you.
OK, please unplug TV power cord form 10 minutes to reset, replug back in and check.
TV should show menu screen all the time even if no video source is connected.
OK, does the power light on TV blink when screen becomes dark?
Please shine a good flashlight on screen while TV power is On, press menu or volume button, do you see faint/ dim image of menu/ volume graphics on screen with help of flashlight?
OK, it seems firmware issue as TV has self diagnostic feature that can detect several hardware related problem and power light will start flashing in specific times. Since power light stays solid that means it would be TV firmware issue and I would recommend to update TV firmware (internal software) by going to following Sharp link, firmware update file and instructions pdf file would be available under Download button..
If problem still persist then it would be main board internal issue (beyond the self diagnostic limits) and main board replacement will resolve the problem. Please reply back with the result and if problem resolved then a positive rating to answer would be highly appreciated.
Yes, unplug TV power cord from wall outlet, connect USB device in TV, replug TV power cord back in and turn it On. TV will check USB input by default and firmware update should start automatically if firmware file is copied on USB as per Sharp instructions.
Sorry to hear that, main board part number is ***** or some thing similar written on sticker pasted on main board of TV, please note that partial part number such as G460FM02 would be written on that sticker so you would need to add DKEYM in that part number and search/ google it to get list of suppliers and choose best price to order it.
I found following supplier for above part number main board..
I hope these info will help. If you have any additional questions, feel free to ask. If you're satisfied, please rate me a 5-star at the top of your page. Thank you.