| Author |
Message |
    
Snapperhead
| | Posted on Sunday, November 02, 2003 - 9:10 am: | 
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Hey guys.. I have a VICTORY PS-35 power supply....When I turn it on.....The volt meter is maxed out and when checking current with my VOM it was crankin' out 24.3 volts.......The variable knob had no effect at all.......Any leads on what to check on the inside of this PS would be appreciated.......Thanx..... |
Ss8541
| | Posted on Sunday, November 02, 2003 - 12:08 pm: |
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sounds like the passive regulators are shorted (collector to emitter). this is a common problem, but may not be your problem. there are other possibilities, but i would i would check this 1st. |
Snapperhead
| | Posted on Sunday, November 02, 2003 - 2:20 pm: |
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Thanks Ss8541, I'll check it out....... |
Dx431
| | Posted on Sunday, November 02, 2003 - 2:48 pm: |
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I had a Victory ps, PS-20, and it made a bad hum in my radio. Got rid of it and baught a Pyamid. Problem solved. |
Znut
| | Posted on Sunday, November 02, 2003 - 4:07 pm: |
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My P.S. did the same thing Snapperhead. My problem was exactly what SS8541 said. I had a shot 2n3055 transistor. Someone suggested that may be the problem so I ordered 6 brand new ones ($1.05 each plus shipping)and started replacing them one by one. It was the second one I pulled, lucky!
Good Luck! |
Mr_Rf
| | Posted on Sunday, November 02, 2003 - 8:54 pm: |
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Also, the pass transistors can usually be removed one at a time to troubleshoot the problem. And, if you don't need all the current that the supply is rated for, then it can be run without one of the transistors until you get the replacement.
Rule of thumb...the ammount of current the supply is rated for divided by the number of pass transistors equals the ammount of current capacity lost if you pull one of the transistors. |
Snapperhead
| | Posted on Sunday, November 02, 2003 - 9:27 pm: |
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Sounds great Znut......I'll give it a whirl.......Thanks for the help all........ |
Snapperhead
| | Posted on Tuesday, November 04, 2003 - 8:06 pm: |
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Hey guys, Just a quick note on the problem.....Well....You guys Hit the nail right on the head by golly.....It was the third one that I pulled......I only have five 2n3055 transiters running until I get a new one for replacement......Thanks again for the help on this matter.........73's |
Snapperhead
| | Posted on Thursday, November 06, 2003 - 1:31 pm: |
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Hey all....I have another quick question....Somebody said to swap out the 2n3055's with 2n3771's and it will make it somewhat bulletproof......I want to ask you guys and get some input on that.......Thanks all |
Bigbob
| | Posted on Thursday, November 06, 2003 - 7:56 pm: |
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Does anyone make giant-size step-down transformers,such as 120 primary,18 secondary,with 8 or 10 gauge secondary wire,ya'know like a 200 amp output.Got some 35 amp TO-3 PNP transistors to replace my MJ2955'S,five will get me 175 amps,also have a 20 amp dedicated line to P.S.Figure this would be cheaper than getting a KLV1000-P. |
Ss8541
| | Posted on Thursday, November 06, 2003 - 10:50 pm: |
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the 3055 is a 15amp trans and the 3771 is a 30amp. to anwer your question, i'll put it like this, i only stock the 3771. |
Snapperhead
| | Posted on Thursday, November 06, 2003 - 11:13 pm: |
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Hey Ss8541, I got your point......Thanks |
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