No picture just voice

You should not get Jingle if CW, Lamp or ballest are failing. Look behind the set and see if you see the lamp glow. Do you get a menu at the very minimum? The input determination is a critical troubleshooting element. Is it on all inputs including the tv tuner? If the component input for example is the only suspect input it would suggest wiring problem or external equipment setup problem. Depending on the vintage of the external componet. It is possible that the output you were using on the device somehow was changed. Some early set top boxes allowed to to select what output is used. The audio implies you have those wires connected proper. Give us an update
thanks

Do you get the power up jingle? If so, you may have a hefty problem. That could be from a variety of places. If you don't, the first thing to check/replace is the bulb. From there move on to the ballast and then onto the color wheel. Look at the back of the set, on the right hand side is an access panel, its held in place by one screw. Remove the screw and you'll see the silver lamp housing inside, there are two gold screws on either side. Loosen them, they wont come completely out, and use the black handle to pull the lamp housing straight out toward you. There wont really be a sure fire way to tell if the bulb is bad. The filament that actually burns is inside the glass tube that comes from the middle of the bowl. The wire you see inside the tube is flat and very thin. Just below that tube will be a round bulb shape. If you see white looking powder in that tube, you bulb is likely bad, but as stated, there isn't always a tell tale sign that the bulb is out. Order a new one. I recomend rivervalleyelectronics.net, they allow returns if the bulb turns out to not be your problem. The bulb will come out of the housing fairly simply, with just a few screws. Replace, reverse and fire it up. Post back with the results or email me directly and I'll take you onto the next step if this doesn't fix the tv. Cfoley@hawaii.rr.com Good luck.