20 Most Recent Proview HX303 30 in. HD-Ready LCD Television Questions & Answers

Check the remote control for its infrared emission. Check it with fresh batteries. Check it by pressing all the keys. You can detect the presence of infra-red emission from the remote control, using a cell-phone camera. If you wish to get more details about how to check a remote control, please visit this site. One among the posts has details about it. In some cases, the remote control might need to clean. http://electronicshelponline.blogspot.com/ http://homenol.blogspot.com/ http://remotesearch.blogspot.com/ Search the site by type in this key phrase "how to test a remote control "in the "search box at the top right of the display window of the Homepage" to get the related post quickly. https://youtu.be/wUpnETSm6_k https://www.youtube.com/watch?v=jsSCNCW3IbQ [open and clean] https://www.youtube.com/watch?v=Qp-l1uh-5gE [open and clean]

Should work with the resolution change. Sure you are selecting the correct input on tv? Hate to say this but there could be something wrong with your new laptop. Just because it is new means nada. The output area may be fubar.

Sounds like The main power supply regulator section circuit fault. Either it will be a separate board, or the part of main board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/ It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size. ....

Connect a known working DVD player by using a new HDMI cable to HDMI INPUT 1 and check for signal.
If you have a DISH or CABLE system box, connect that also with a new HDMI cable to HDMI input 2 or 3 and recheck for signal. Your T V remote will have an input selector to change between the different inputs on your
T V.

Maybe the input on the tv needs to be adjusted to work with the cable tv for example in the tv menu where you can adjust the sources for the inputs maybe it is set to something like RGB instead of HDMI. If you have a user manual consult it on how to change the input devices. Good luck.

A brief flash of a picture few sec. and the tv LCD screen panel go black.The tv still have audio sound left?Yes,tv have 1 or 2 the long board that call the LCD inverter boards it is dead.The inverter boards only job are too provided a backlight for the tv LCD screen panel to see a picture.

had one where back lie was going out turned out to be bad solder on transformers on the board that feeds the lites

Inverter board is tripping protective circuit. Check Caps!!! or Ballast's.

Thsi model does not have Digital tuner, only NTSC tuner. You will need converter box.
Here is the spec of your TV:
http://www.productwiki.com/proview-hx303/article/proview-hx303-specifications.html

http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting Failed TV and Monitors: http://s807.photobucket.com/albums/yy352/budm Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague

I think you might have dry solder joints on the line output stage but if this does not solve the problem then it is a faulty component on the line output stage. If you can do it check for yourself otherwise find a competant technician. Hope this helps.

Unplug ti from the wall for about an hour to let it reset itself, if it still does not work, you will have to open it up and troubleshoot the problems.
If you are going to DIY and have proper tools and know safety precaution then please read on:

Please see my basic troubleshooting guide here:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide

http://s807.photobucket.com/home/budm/allalbums

http://en.wikipedia.org/wiki/Capacitor_plague

if you are getting color on the screen, chances are that you might have a cable loose. I'm not sure if you are using component cables but sometimes when the blue cable is loose, it will cause a green screen. or if you are trying to watch something above your TV's capabilities, this will happen as well.

You have a bad inveter boardo n this unit $75 bucks for replacment from www.partstore.com or $150 upwards for repair service. thanks for using fixya if you have any other questions please ask. thanks for rating. Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/edwy_1a56970cf1ea4620

10835

The only way is by changing the panel.