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Post by mastertech on Dec 2, 2016 23:49:08 GMT -5
Recheck the ohm value of R139 and if good then just put that back in and recheck voltages on both sides of it. Gotta go for today.  |
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nashou
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Post by nashou on Dec 2, 2016 23:50:03 GMT -5
Both TR's are still out rright?
Nash
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nashou
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Post by nashou on Dec 2, 2016 23:51:35 GMT -5
Both TR's are still out rright?
Nash
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nashou
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Post by nashou on Dec 2, 2016 23:56:00 GMT -5
Recheck the ohm value of R139 and if good then just put that back in and recheck voltages on both sides of it. Gotta go for today. 23.19 and 24.23 |
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Post by mastertech on Dec 3, 2016 10:46:59 GMT -5
Did you get more part yet to do TR108?
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nashou
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Post by nashou on Dec 3, 2016 15:26:08 GMT -5
Did you get more part yet to do TR108? Yes I have more of the 2SK363's I ordered about 10 of each transistor on that board except the A999, I only have one new one left. Nashou |
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Post by mastertech on Dec 3, 2016 17:15:04 GMT -5
So right now on the bad channel you have currently out is R137,TR113 and TR117. Anything else?
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nashou
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Post by nashou on Dec 3, 2016 17:28:39 GMT -5
Correct, nothing else . I also changed outmlast night the 24
Volt zenners with some 25 volts I bought 1/2 watt .
So now I think all diodes are changed . Also in the last order I got the original 1s1555 diodes . Installed now are the 1n4148
Types
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nashou
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Post by nashou on Dec 3, 2016 17:33:19 GMT -5
I actually only have 6 of the sk363's
And the original sk146 dual unit.
Nashou
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Post by mastertech on Dec 3, 2016 17:48:29 GMT -5
ok, lets leave the bad channel as it is for now and put in tr108 and see if that channel still runs fine. If it does then test some voltages on that channel.
B+_____
B-_____
R140 both sides ____, ____
R154 both sides ____, ____
Use the 363's for 108
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nashou
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Post by nashou on Dec 3, 2016 17:53:51 GMT -5
Ok,
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nashou
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Post by nashou on Dec 3, 2016 18:08:54 GMT -5
ok, lets leave the bad channel as it is for now and put in tr108 and see if that channel still runs fine. If it does then test some voltages on that channel. B+_____25.21 B-_____-25.27 R140 both sides -25.39,-25.39 R154 both sides -24.85, -24.86 Use the 363's for 108 Ok done. voltage slightly increases as amp warms up so those numbers might be a little higher in a while |
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Post by mastertech on Dec 3, 2016 18:15:14 GMT -5
Have you changed any parts on this channel other then TR108?
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nashou
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Post by nashou on Dec 3, 2016 18:17:51 GMT -5
Have you changed any parts on this channel other then TR108? I dont believe so. Did we swap one TR from one side to the other or did we talk about it? I think we discussed tr116 and tr115 swap. But not sure if I catualy did it. I think I was afraid of blowing TR108 as I had the original still in. Nashou |
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nashou
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Post by nashou on Dec 3, 2016 18:21:12 GMT -5
Looking at TR116 now looks like the solder in new. So maybe we did swap it out and back again.
Nashou
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