Hi Mr Meridian,

I guess my 800v4 has exactly this issue... It cannot power up, it keeps click click click... and the display blink a few times.

Then I unplug the connection from the switching power supply to the control board, and measured the voltage at the pin of the power supply, it gives a 5.2 reading.

However when I measure the voltage at the control borad input and output, it is almost zero volts.

I wonder, how do I make the adjustment?

also the red light at the 800 Switched Mode PSU Board is flashing..

After I fix it, I too would like to take a look the option for a linear PSU, and where I can get it from?

Thanks

Last edited by Hahayan; 2013-05-15 01:37.