Hitachi 51g500 loud popping noise then screen goes black but sound still on sometimes pops then shuts off and turns back on it is still under extended warrenty

sound like the shocks that hold the hatch open have been over extended, thats what the popping sound is when its opened.. replace the shocks and that will keep the hatch open and eliminate the popping sound,

saw a similar problem w/a Samsung and eventually the Focus Transformer gave out w/a big electric pop sound and all power went out. So it's probably related to a problem with high voltage and Flyback issue. Hope that helps a little.

sounds like the lamp has shattered. check the lamp

The loud "pop" sounds like high voltage arcing coming from one of the CRT's.....you may have to pull each CRT out and put silicon sealant on the anode connectors to prevent the arcing.(one of the CRT's may be arcing internally also and the only cure is to replace that CRT) If you let the arcing continue,it will short out the horizontal output transistor sooner or later.......

Same problem but mine goes black for long periods. Menu prompts still available and volume "meter" on screen is still visible. Have rerouted cable, changed outlets, all to no avail.

Could be a possible flyback. yes.. for a 27inch i would not think it would be worth it... 27 inch tvs are realativly cheap.. the lowest price to repair would be about 200 if you got lucky.

Turn down the volume and see if you still hear it,a loud pop or snap could be high voltage call your servicer in your area ASAP
while its under warranty and have him check the high voltage circuits for a intermittenting pop or snap.And have the model # ready!! Good Luck!

Yes worth repairing but not a crt problem. the crt's are powered by a high voltage transformer and sometimes it's caps that goes bad and in turn knocks out the crt's. but they are ok, it's in the high voltage line.

Does the " popping" noise come through the speakers or from the TV chassis ? If it is coming through the speakers you could have a bad solder joint somewhere in the tuning circuit. If it is a snapping sound coming from the chassis, then you probably have something arcing in the high voltage circiut. If this is the case then you should have it checked out since this can cause other parts to short shutting down you set completely.