| Author |
Message |
    
Jyd
| | Posted on Saturday, June 22, 2002 - 8:23 pm: | 
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i had a maveric 250 years ago,and when taking the tubes out i had to ground out the caps on the tubes to discharge it and it would spark.i have another one now and i tried to discharge it and no discharge.i can turn it on and turn it off then hold one hand to ground and other to tube caps and it wont shock me.the amp works fine does about 850watts.but when there is no discharge does that mean my caps under the amp are getting weak?should i change them?what do you suggest? thanks |
Jyd
| | Posted on Sunday, June 23, 2002 - 9:53 am: |
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671,someone with amp knowledge |
Tech671
| | Posted on Sunday, June 23, 2002 - 11:12 am: |
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My specialty is mostly solid state JYD, I do know a bit about tube amps, but don't think I'd be grabbing the caps on tubes to check for shock!!
I think 307 or SS8541 will have to help you on this one (if you're not in the emergency room)! |
Taz
| | Posted on Sunday, June 23, 2002 - 4:44 pm: |
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hehehehsahahahaah, be carful dude! |
Jyd
| | Posted on Sunday, June 23, 2002 - 3:14 pm: |
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well i tried to dicharge it and none.so i just had to test it call me crazy. |
Scrapiron63
| | Posted on Sunday, June 23, 2002 - 2:07 pm: |
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JYD, are you sure it was a Maverick you had before that needing discharging before handling. I've owned the D & A amps for many years, and don't remember every having to discharge the caps on one, however, I always check them. All that i've had, by the time you got the cover off, they were discharged. Maybe the one you had before had a problem with whatever is suppose to discharge them. Now the Maco's are another story, the caps in them will hold charge forever it seems, I don't care how long one has not been used, you better discharge those caps before handling. |
409
| | Posted on Monday, June 24, 2002 - 2:26 am: |
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Some amps have bleeder resistors in the cap. bank or close to the diodes to kill off the charge after a while to keep people with no respect for HV from getting there teeth ratteled. |
Jyd
| | Posted on Monday, June 24, 2002 - 8:33 am: |
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maybe it was my maco 300 |
Radiodude
| | Posted on Monday, June 24, 2002 - 8:03 pm: |
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B+ will bite hard |
Bigbob
| | Posted on Tuesday, June 25, 2002 - 7:17 am: |
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You had a maverick 250 years ago,gosh jyd you ARE old. |
Jyd
| | Posted on Tuesday, June 25, 2002 - 4:13 pm: |
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30 years old but after that post i am not shure |
Jyd
| | Posted on Tuesday, June 25, 2002 - 1:07 pm: |
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i am 30,i had it as a first base amp.i was 19 years old.i ment i had a maverick 250,years ago.sorry, kinda late for correcting my mistake now. |
Monk
| | Posted on Thursday, June 27, 2002 - 12:26 am: |
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Those older D&A amps had the B+ voltage swithched through a relay, that's why it didn't knock you on your dumb ....ss. Go to CB tricks and look at the schematics.
Monk |
Jyd
| | Posted on Thursday, June 27, 2002 - 3:26 pm: |
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those scamatics are not for what i have,mine is a 8 tube.done been there |
Scrapiron63
| | Posted on Thursday, June 27, 2002 - 1:20 pm: |
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There have been a lot of people knocked on their dumb ....ss, ha. Including this old dude. The old D&A 12 tube gray phantom was notorious for unloading the caps. It made a noise louder than a 22 shot, and you never knew when it was coming. You might use it several times and it never happen, than when it was least expected, you might have been sitting there using it for a good while, and,POW, talking about scaring the •••• outta ya. ha, no damage or anything, just a loud pop. I used them for years, and never got use to it. The later Triple Stage Phantoms with the brown case, didn't do that. |
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