There is sound, no images, backlit lights. There is sound, backlit lights, fault should be in the image processing circuit. w7Fservice manual download site
As all kinds of voltage, only reset the power supply IC814 is not normal, is only 0.5 V, the normal is 3.3 V, power supply IC814 may be damaged, or load short circuit caused by the power supply is normal, disconnect IC814 load, voltage up to 3.3 V, is load problem. As to the IC1500 24 feet of very little value, disconnect after 24 feet 3.3 V voltage is normal, IC1500 damage. Replace IC1500 -- -- -- -- -- -- -- C1AB0001999 troubleshooting. w7Fservice manual download site
 w7Fservice manual download site