No Picture, already replace lamp. model RCA HD50L PW62AYX6

5 blinks indicates the lamp driver/ballast is bad
part# 1-468-936-13

https://www.encompassparts.com/item/6542679/Sony/1-468-936-13/Power_Supply_Block

Replace your LAMP if all of your Fans are running! If lamp fan is not running Lamp will not turn on .Call FOX for Lamp 1-800-227-5369

Hi,
You need to replace Lamp only as existing lamp is weak in result and causing such symptoms.
Ballast supply is fine and working.
Thanks.

Ballast Board #261629 Ballast is what turns Lamp on, Also Check your Lamp Fan if it is defective Lamp will not Light!

Try unplugging the set for 5 minutes and then replug it in, allow 70 seconds for it to boot up (LED stops blinking). See if it works then. If not press the input/device button and menu button at the same time read a 2 digit code (blinking led) flashes first # short pause and the flashes 2nd #. This will be necissary to determine your cause. Most common besides lamp is power supply caps that cause intermittant operation.

6 blinks means lamp thermal fuse blowing, replace thermal fuse.

See here

was there a smell? it might be main transformer the front blinking led means the set in is safety mode and wont boot up because of a fault

5 Blinks usually means the horozontal circuit has problems and parts need to be replaced. unplug power to reset

sounds like the DM3 isnt powering up the ballast to light the lamp or the ballast may be faulty. i would suggest trouble shooting the DM and ballast voltages.

Sounds like it could be the entire light engine.  The part is available on the Internet, but it runs $700 - $1200 without the lamp (although it sounds like you could use your existing lamp without a problem). These parts, however, are notoriously hard to find and may be backordered for months.

May not be worth the cost, but that's up to you.