Eclipse XA1200 ICE

ray9043

Member
2008-03-25 8:39 am
Hi everyone¡¡

Today comes to me an eclipse xa1200 ice amp.

I dont test any amp, before i check the inside. In this one i find a rarely and 100% sure bad conection on the irf1010 ps mosfet, see the image.

So i take off all the ps mosfets and test it. No power, no 12v on the tl494 so replace the remote signal transistor. 12v on vcc and c1 and c2 of the tl. Now i have around 4-5v on the tl outputs, but im sure the ps mosfets drivers are grone. Anyone here have the shematic or the corrct part nunber for q919 and q921?

Thanks!
 

Attachments

  • 20200305_210919.jpg
    20200305_210919.jpg
    239.7 KB · Views: 84
  • 20200305_210852.jpg
    20200305_210852.jpg
    432.3 KB · Views: 80

ray9043

Member
2008-03-25 8:39 am
Thanks Perry! Its the same circuit. I put irf1010 and find another problem, someone do a mess with evrything in the amp. The rectifiers was in the bad side! :eek:

Now the ps turn on, then protects, about 35 volts then go off. Im locking for bad traces or solder juntions.
 

Attachments

  • 20200308_211152.jpg
    20200308_211152.jpg
    320.9 KB · Views: 56

ray9043

Member
2008-03-25 8:39 am
Everyone smd transistor and resistor checked. Now i think i found the problem, the ssm2018 ic. If i touch the ic leads, the speaker make noises, so i think the ice ic's are working. No heat from mosfets or anything else.

I found datasheet for the ic but its obsolete and discontinued
 

Attachments

  • 20200505_195556.jpg
    20200505_195556.jpg
    1 MB · Views: 28