To replace LCD901, the fault is still. Check the IC and LCD power supply is normal, R, G, B drive signal is normal, andNDDservice manual download site
IC801 and IC804 each control signal are normal, IC802 digital to analog conversion voltage is normal. After repeated measurement IC804NDDservice manual download site
Eleventh, the 12 foot control signal on the IC pin measurements, but the corresponding CN805 seventeenth, 18 feet without. Control signalNDDservice manual download site
Sometimes occasionally but the magnitude is very low, along the line tracking over and found eleventh of IC804, 10 feet off, after re weldingNDDservice manual download site
Normal. (the IC just in the menu button on the back, if the user is often a strong operating this key, may causeNDDservice manual download site
This IC desoldering).NDDservice manual download site