Proceed HPA2 blinking.

Riley804: Thanks.

I called them, busy phone all day for the last 2 days.
Holiday vacation? or please do not bother us?

This amplifier was causing a moderate "click" to my speakers
when it was turn on but this problem was on and off.

The day before it went off, after I turn it on, at the beginnig, it was causing a little loudly interrupted noise to the speakers for a few seconds . The noise was not hummm

Any ideas what could be the problem ?

Hi Riley. i know this was a long time ago , but in the off chance you may see this i have the exact same problem  were you ever able to sort it out ? thanks in advance 

Hi Guys,  I have the same issue too...power light just blinks.  I checked the internal fuses, or at least all I could see, tested them and all are fine.  Have you guys figured anything out on this problem?

Sounds like one of your amp modules has gone bad. Pyramid Audio in Austin, TX can repair it for you.