Lamp flashes red and tv just shut off - Panasonic PT-56DLX76 Television

Lamp light blinking yellow means lamp door not installed.
Lamp light solid red and TV shut off is lamp error (did not light.)

Faulty capacitors

A possible bad lamp if not replaced recently or removed and at least examined. What is model number and what have you tried so far?

U recheck the tv projection lamp connections,the door latch and the lamp door closed properly and tightly.Yes,if the tv projection lamp LED light indication "LAMP" word it is still flashing or staying on the tv projection lamp some how dying again.The tv projection lamp should be replacing it again.

REPLACE LAMP !!!
Buy an Orginal Replacement Lamp.

Probable Lamp. If lamp hasn't bown the red Lamp Lite won't flash but other lamp issues cause stby timer light to continue flashing. If stby red lite is flashing, count the no. of times flashing - could open thermal fuse (6X flashing)

I would suspect the lamp first as they can cause intermittent shut down issues.

It is symptom of weak Lamp in your TV, replace Lamp with following part number..
A1606034B LAMP BLOCK XL-2100U
It is available in Sony Accessories for $200
Always buy Sony Original Lamp for your Sony TV and avoid aftermarket/ cheap lamps.

or a new lamp. you could first replace the lamp.
the screen might work fine for a couple of seconds, but then it fades away or deteriorates. This means the lamp is going bad.

you have a bad lamp or balast