Contact MTX to get the value of the blown cap.
The larger caps are likely OK. It's probably only the plastic cover that's bulging.
The larger caps are likely OK. It's probably only the plastic cover that's bulging.
Not likely but it can't be fully repaired without having that cap replaced.
I don't have any specific information on this amp but if no one else can offer suggestions, post the DC voltage on the LM339 and the TLx94 and I'll see if something looks wrong. Have both B+, remote and ground connected. Copy and paste the following into your reply.
LM339
Pin 1:
Pin 2:
Pin 3:
Pin 4:
Pin 5:
Pin 6:
Pin 7:
Pin 8:
Pin 9:
Pin 10:
Pin 11:
Pin 12:
Pin 13:
Pin 14:
TLx94
Pin 1:
Pin 2:
Pin 3:
Pin 4:
Pin 5:
Pin 6:
Pin 7:
Pin 8:
Pin 9:
Pin 10:
Pin 11:
Pin 12:
Pin 13:
Pin 14:
Pin 15:
Pin 16:
I don't have any specific information on this amp but if no one else can offer suggestions, post the DC voltage on the LM339 and the TLx94 and I'll see if something looks wrong. Have both B+, remote and ground connected. Copy and paste the following into your reply.
LM339
Pin 1:
Pin 2:
Pin 3:
Pin 4:
Pin 5:
Pin 6:
Pin 7:
Pin 8:
Pin 9:
Pin 10:
Pin 11:
Pin 12:
Pin 13:
Pin 14:
TLx94
Pin 1:
Pin 2:
Pin 3:
Pin 4:
Pin 5:
Pin 6:
Pin 7:
Pin 8:
Pin 9:
Pin 10:
Pin 11:
Pin 12:
Pin 13:
Pin 14:
Pin 15:
Pin 16:
LM339
Pin 1: 5.09
Pin 2: 5.09
Pin 3: 12.24
Pin 4: 5.30
Pin 5: 7.06
Pin 6: 3.82
Pin 7: 5.27
Pin 8: 0.812
Pin 9: 3.68
Pin 10: 5.00
Pin 11: 3.68
Pin 12: 0.242
Pin 13: 0.231
Pin 14: 5.02
TLx94
Pin 1: 2.56
Pin 2: 2.55
Pin 3: 3.21
Pin 4: 0.228
Pin 5: 1.705
Pin 6: 3.58
Pin 7: 0.225
Pin 8: 12.15
Pin 9: 0.234
Pin 10: 0.244
Pin 11: 12.14
Pin 12: 12.25
Pin 13: 5.23
Pin 14: 5.23
Pin 15: 5.24
Pin 16:0.244
Pin 1: 5.09
Pin 2: 5.09
Pin 3: 12.24
Pin 4: 5.30
Pin 5: 7.06
Pin 6: 3.82
Pin 7: 5.27
Pin 8: 0.812
Pin 9: 3.68
Pin 10: 5.00
Pin 11: 3.68
Pin 12: 0.242
Pin 13: 0.231
Pin 14: 5.02
TLx94
Pin 1: 2.56
Pin 2: 2.55
Pin 3: 3.21
Pin 4: 0.228
Pin 5: 1.705
Pin 6: 3.58
Pin 7: 0.225
Pin 8: 12.15
Pin 9: 0.234
Pin 10: 0.244
Pin 11: 12.14
Pin 12: 12.25
Pin 13: 5.23
Pin 14: 5.23
Pin 15: 5.24
Pin 16:0.244
I found the outside of the cap in the amp. I can read on one side
85 C
S11K
723
Dose that tell you what cap it can be?
85 C
S11K
723
Dose that tell you what cap it can be?
Those look like temperature rating, some kind of manufacturing code and maybe manufacturing date (week 23 of 2017?) but we actually need the capacitance value, say 4700 or 10000 microfarads (uF) or something similar, and a voltage rating, say 25V or 40V or whatever.
Even better, post pictures of any inscription printed on the plastic sleeve.
The inscription on the sleeve is melted. I only see 50v on the other side. I see a similar cap with the same markings and that one says TI 0.47mfd 50V is it safe to say this is the same value cap?
They replied back saying that it is a MAE005, 0.47MFD 50V electrolytic capacitor.
Would this be a good replacement:
RFS-50VR47ME3#5 Elna America | Capacitors | DigiKey
Would this be a good replacement:
RFS-50VR47ME3#5 Elna America | Capacitors | DigiKey
It looks OK.
What is the DC voltage measured directly across the pads for the capacitor?
Did you check to see if the amp was producing audio?
What is the DC voltage measured directly across the pads for the capacitor?
Did you check to see if the amp was producing audio?
I get 0.017vdc. I did not check it for audio yet. I didn't want to mess anything up. Should I test it?
So i have audio coming out. I replaced the capacitor with a 50v 0.47uF. When I powered the amp up and was checking the output voltages the capacitor blew up.
Was the board clearly marked for polarity?
The voltage you read for the cap earlier couldn't cause a 50v cap to fail.
Post several high quality photos of the area around the cap.
The voltage you read for the cap earlier couldn't cause a 50v cap to fail.
Post several high quality photos of the area around the cap.