Ok so I am reparing a clarion MCD360 Crossover. The problem is that it is not powering up at all i.e. the red power led is not illuminating when the remote terminal, the batt+ terminal and the ground terminal is connected to a reliable 12volt supply.
I obtained the service manual from online and traced the problem to the power supply stage, but I cannot seem to figure out what is the problem. Attached is the power supply stage schematic.
I am not getting any voltage out of T1 (The step up power supply transformer). On IC2, I am also not getting anything out of pins 9 and 10. I assumed the IC was bad and replaced it, but that did not solve the problem (my bad. lol) I also replaced ZD1 because I was getting voltage before it, but nothing after. But after replacing it, I got the same readings. So now I am perplexed as to what is the problem. No caps shorting, all resistors seem to be fine. What am I missing?
I obtained the service manual from online and traced the problem to the power supply stage, but I cannot seem to figure out what is the problem. Attached is the power supply stage schematic.
I am not getting any voltage out of T1 (The step up power supply transformer). On IC2, I am also not getting anything out of pins 9 and 10. I assumed the IC was bad and replaced it, but that did not solve the problem (my bad. lol) I also replaced ZD1 because I was getting voltage before it, but nothing after. But after replacing it, I got the same readings. So now I am perplexed as to what is the problem. No caps shorting, all resistors seem to be fine. What am I missing?