Fix DMD AA41-00694D(E) for HLN5065 - HLN4365
Posted: Mon Jul 26, 2010 2:43 pm
I`ve got 2 DLPs - HLN4365 (my friend give it to me - it shows only B/W picture - turns out - color wheel was destroyed) and a HLN5065 (I bought it for 80 bucks as a spare parts source - noisy color wheel (was replaced as well) - but able to start it up from time to time only - and finally I cant start the TV at all). so I replace color wheel and put HLN4365 light module into HLN5065 (the whole internal parts are the same). It was working fine for 6 moths - then it starts freezing with b/w picture. Thanks to the post from pjhauser who narrowed down the possible reason for such problems - IC119 - I found the same behaviour from my DMD bord. I ordered DMD board from D-M - AA41-00694E for HLN5065 (it turns out they compatible with AA41-00694D which was installed in my HLN5065 ). So I took the both defective DMD boards and resolder IC119 - I use Hakko soldering gun with needle tip without solder - just quick touch each leg of the chip with small pressure (under magnifier). 3 days later - both TV still working fine (HLN5065 with original not starting problem running 12 hours a day, HLN4365 - with board that made freezing B/W picture - couple hours) and I have 1 spare DMD board . So I think pjhauser right and the whole story like this: boards was prepared without IC119 (memory or flash) and IC119 was installed later on using different soldering unit with really weak connection (not enough solder, temperature conditions, etc) which creates cracks in the solder very fast. Hope it will help to somebody