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zerksies
Double Platinum Member
USA
3406 Posts |
 Posted - 02/16/2010 : 02:37:51
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ok so i tried it again. so i held it there for a few seconds and tried the guitar the first one i did was IC3 pin 7 no sound what so ever i get a tick but i might be scraping up close to some thing else. and i tested all the other in the order that you told me no sound either. So buy going buy what you tell me that is the order that the opamps go so i am assume that opamp 3 is bad
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Laurie
Double Platinum Member
Canada
4854 Posts |
Posted - 02/16/2010 : 02:43:07
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OK. Good stuff. So, maybe IC3 is bad. Before we can say for sure, we need to test one more point.
Probe C33 (either side) with the LED lit and guitar signal going in.
If there is signal on C33 and no signal on IC3 pin 7, then IC3 is bad. If there is no signal on C33, then there is probably a switching fault... |
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zerksies
Double Platinum Member
USA
3406 Posts |
Posted - 02/16/2010 : 03:04:47
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| I got signal at C33. So where can i buy an Opamp and what type |
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Laurie
Double Platinum Member
Canada
4854 Posts |
Posted - 02/16/2010 : 03:14:10
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Replace all 4 opamps. If one has gone, the others may be gone too, but if not then will be stressed.
M5218AL www.smallbearelec.com
Check D6 too (use the diode test feature on your meter). It is probably dead as well. If it is, replace it with a
1N400x (x can be any number). |
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zerksies
Double Platinum Member
USA
3406 Posts |
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Laurie
Double Platinum Member
Canada
4854 Posts |
Posted - 02/16/2010 : 04:23:01
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quote:
Originally posted by zerksies
I did not see M5218Al but i assume this is what you ment
http://www.smallbearelec.com/Detail.bok?no=578
I have plenty of 1n4002 I just bought a dozen of them
Yep, that will do the job. |
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zerksies
Double Platinum Member
USA
3406 Posts |
Posted - 02/20/2010 : 18:43:50
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| Order parts today, plus a bunch of other parts got them real cheap |
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Pedal Dan
Silver Member
USA
419 Posts |
Posted - 02/20/2010 : 21:48:10
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quote:
Originally posted by zerksies
Order parts today, plus a bunch of other parts got them real cheap
I hope ya get it working! I have an 04 with similar probs. It has low signal when engaged and distorted distortion!!! If tht makes any sense. Anyway I'm following this thread to see how Your repair goes! |
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zerksies
Double Platinum Member
USA
3406 Posts |
Posted - 02/24/2010 : 03:51:00
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| does it matter which way the opamp goes in |
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Laurie
Double Platinum Member
Canada
4854 Posts |
Posted - 02/24/2010 : 04:34:46
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Yes... the dot on the new one goes in thew same place as the dot on the old one  |
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MT-2 no Distortion
