i purchased this amp and another or ebay as broken for parts /repair and for my surprise the other unit worked just fine .This Jl 500/1 dosent look like it was ever repaired in the past ,nor anything looks burn here is my test results :
-when i connect it to my psu the green light comes on ,amp draws 3a current right away ,no power suppy start pulse to be seen .Eventually the power light does away in about 1 min ,current thru the amp is still 3 amp.If i swich the singnal sensing button to on the power light comes back on ,draws a little more current .
There is no dc on the speaker terminals ,no audio output neither .moving switches or pots dosent efect the unit
board: rev 10
-when i connect it to my psu the green light comes on ,amp draws 3a current right away ,no power suppy start pulse to be seen .Eventually the power light does away in about 1 min ,current thru the amp is still 3 amp.If i swich the singnal sensing button to on the power light comes back on ,draws a little more current .
There is no dc on the speaker terminals ,no audio output neither .moving switches or pots dosent efect the unit
board: rev 10