20 Most Recent Proscan PS27500 27" TV - Page 6 Questions & Answers

I think your tv has picture tube problem. Bring it near to a mechanic.

Using https://www.google.com the following two methods were suggested: First, enter 0000. If one was never set, that is the default password. Second, if a password was set, you will need the master override . In order, press menu 1-4-7-0 That resets the default password to 0000

Try plugging the TV into another known good outlet. If there is no change unplug the TV for 30 minutes to 1 hour. Plug it in and try to turn the TV on again. If you have the same result, you have a bad main board that needs to be replaced. If its under warranty have it repaired or exchanged. If your warranty has expired take it to your local TV repair shop. Hope this helps.

Those blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power LED, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices. https://homenol.blogspot.com/ https://electronicshelponline.blogspot.com/ If blinks continue without any pause, or the LED light stationery; the main board is faulty. Search the site by type in the "brand name" to your device; [Exclude the model number], in the "Search box at the top right of the display window of the Homepage" to get gathered related posts. See the site by a desktop. Mobile view has no search box. If you are viewing it by your mobile, see it in webview/

Sounds like video output stage circuit fault. Contact any service technician. This is not a user repairable fault.

A blue screen indicates no video signal is coming in, Check your source menu.