Ask and you shall receive.

This link shows the older style GP radios, and yours is the same concept, except I believe your style has 3 bulbs.

You are correct that it is LCD display, but the backlight shines thru it so you can see the display.

Radio Lamp Repair

Not sure how to dismantle the newer radios, but Im guessing its not too difficult.

Of course you dont have to listen to me, Im just being a cheap ass, but thats the link if you decide to do it.

Hope this helps.