Polaroid TDA-03211 LCD Repair

Hi Robert how are you, I check all kinds of information on the web, and lucky for me I tamien Ihave one of these teams, whitch when connected to the sistem LED lights RED, and THE POWER order LED turns blue, but does most anithing.

I have little knowledge in Electronics, remove the back cover of my equipment, and saw that everithing apparently was fine, including capacitors you mention, of 10uf at 450volts, chec widh my capacitometers both with and recorded them in good condition,

I realized that F-2 was srong because it was open or not driving, and this goes down, that the Q-17 and Q-18 were is short.

Replace these for about the same, tuition FQPF9N50, and the device does not work ihave no lumination BACK LITE,fault monitoring and cheking my IC-8, which is the oscilator for them to work , Ihave doubts of it, up there I could forward motion.

I would ask your help that I can check for you but not throw them away.
German Greetings