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Topic: Broken Down DPC 1000 Blues |
Steve Raulston
From:
U.S.A. (deceased)
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Posted 5 Jan 2006 2:48 pm |
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This last week I noticed my amp going south by over-driving into distortion on the A Channel. It was intermittent then it cleared.
I opened it up and man that thing was filthy from all the great club air it was exposed to. Cleaned a few spots, but was hesitant to do anyting outside my abilities with electronics. In other words, I buttoned it back up. I am sending it in for repair but just curious if any other owners of the DPC line have had a channel go south without any warning? Thanks in advance for any insight. |
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Jack Stoner
From:
Kansas City, MO
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Posted 5 Jan 2006 3:24 pm
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Components can fail at any time. Some will gradually go and others will just abruptly fail. NOthing you can do to prevent most of the failures - only thing you can do is fix it when it "breaks".
That is sort of the bane of service tech's and we all have experienced it. A customer will bring in a unit for repair, you will fix what is wrong and check it out and everything is working. A day later or a week or month later it will fail again and the customer will be back complaining that "you just fixed it and it's not working again" and in most cases the new failure has nothing to do with the previous failure - but the customer only knows that it's broke again. (Sorry for the long rant). |
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Ken Fox
From:
Nashville GA USA
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Posted 5 Jan 2006 3:58 pm
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If the fan is making any noise you might want to get it replaced, too! That amp needs all the ventilation it can get, as there is a lot of potential for heat at that power rating.
I am just finishing a CS1800G, Peavey power amp that is rated 1800 watts (900 per side at 2 ohms). It had power filter caps that dead shorted! I know it was a sudden failure on that one. The most likely things to go are fans and filter (electrolytic) type caps. I had 4 failed in this unit, all Illinois brand! I replaced 12 Illinois caps in this baby with Panasonic and another brand from Digikey. I am not a fan of Illinois caps!
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Jack Stoner
From:
Kansas City, MO
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Posted 6 Jan 2006 3:22 am
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But, a "noisy" fan is not an indication that the fan is bad. New fans are also "noisy". The fan design and the fact it moves a lot of air makes the fan "noisy". On stage and at stage volumes it's not even heard.
But, if the fan is not "noisy" then it's time to check it out. |
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Alan Harrison
From:
Murfreesboro Tennessee, USA
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Posted 6 Jan 2006 7:03 am
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I used a DP-750 from 1991 until 2003 for my steel, then it became the power amp for my PA System. Works great. When the fan began to get noisy, I took it out of the chassis and drilled a small hole thru the case just barely going thru the plastic and put a drop or two of oil in the hole. Left it upside down and hooked up to its power source and let it run for a few minutes.(Larry Petre's Idea). That was two years or more ago and it still going strong and normal fan noise.
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Emmons LeGrande II D-10, 8 & 5, Willy D-10, 8 & 8 two Peavey 112's, Profex II and Hilton Pedal.
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Steve Raulston
From:
U.S.A. (deceased)
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Posted 6 Jan 2006 7:06 am
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Thank you guys for the "repairman's perspective. Makes total sense. Now I can only hope this puppy doesn't run into the hundreds for repair. Me thinks I see a Nashville 1000 on the horizon.
[This message was edited by Steve Raulston on 06 January 2006 at 07:13 AM.] |
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Mike Brown
From:
Meridian, Mississippi USA
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Posted 6 Jan 2006 8:23 am
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| The key point here is that your amplifier was "filthy". Occasionally, you might want to remove the top and use a high pressure blower to remove dust, etc.. |
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