Re: Repairing Alesis M1 Active mk2 Monitor Speakers
replaced irf840's nothing changed, diode bridge is fine, i think
foxes
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Last Activity: 02-17-2016, 03:49 PM
Joined: 04-03-2015
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Re: Repairing Alesis M1 Active mk2 Monitor Speakers
VISHAY BC COMPONENTS MAL213661471E3 CAP, ALU ELEC, 470UF, 50V,
visually everything looks fine, i have bought new switching fets (irf840), i will replace them .
thank's for your help, this is way too complicated for me to diagnoseLeave a comment:
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Re: Repairing Alesis M1 Active mk2 Monitor Speakers
-v_lo -22V
+v_lo 18V
-v_hi jumping between -23 -29
+v_hi 36-38
also a audible click every 2s, can't pinpoint location, one of the two smaller transformers marked L1 L2Leave a comment:
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Re: Repairing Alesis M1 Active mk2 Monitor Speakers
loss of sound about 80% when volume pot at 5, then as i crank it up to 7-8 something pops, and volume goes up to 100%Last edited by foxes; 04-14-2015, 01:44 PM.Leave a comment:
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Re: Repairing Alesis M1 Active mk2 Monitor Speakers
can i replace c35 (50v 1mf) with 50v 47mf? thats the closest value i could find on some donor psu. i have replaced the big caps, r4 r3, and c8, still my speaker is lacking power, after a few minutes it warms up, and plays fine. what else? the fet's? no signs of damage on partsLeave a comment:
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