Thought I'd share my problems I had with my lilliput 619.
1st I had heat issue's, The screen would shutdown between 20-30mins from being on. To fix Install a 40m fan where the speaker used to be located, Wired the fans power to the main power input for the screen.
2nd Problem was the onboard fuse below, So replaced this with an external 2amp fuse.
3rd Problem was A1244 semiconductor blew, How'd did I know it had blown? Well I'm no technician or electrical engineer but I opened the LCD up looked at the components and could a slight hole/burn mark on the semiconductor. I've circuled in yellow the faulty a1244. Scouse Monkey help me identify the part and I got it shipped to Sydney Aus from mouser.com, Cost was approx $15AUD. The part purchased was a KSA1244 - Y. See the pic below.
Hope this helps any lilli 619'rs out there.
Pic of faulty semiconductor.
