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06-25-2012, 08:07 PM
| | Registered User | | Join Date: Jun 2007 Location: New Hampshire, USA | | | Slider "knobs"
Every now and then I see on eBay an amp - in this case an Ampeg 3Pro - which has one or more of the EQ slider knobs broken off. Of course, the seller says he easily moves the broken slider w/a paper clip/tweaker/something.
How difficult is it to actually REPLACE one of these things?
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Jeff Brown - Mediocre Bassist Club #402, Fender Jazz Bass Club #772, NH Bassists #16
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06-25-2012, 08:59 PM
| | | | They just press on. Trouble is, they fall off easily!
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06-25-2012, 09:17 PM
| | Registered User | | Join Date: Apr 2007 Location: Finland (Northern Europe) | | Hi. Quote:
Originally Posted by jeffbrown  How difficult is it to actually REPLACE one of these things? | From moderately difficult (=labor intensive), to impossible.
It can be done if the manufacturer either is willing to sell You a few, or if they used a generally available mini slider. Neither is very likely IME.
I have replaced a few (SWR SM400) and repaired a few by inserting a wire loop onto holes drilled onto the stump.
Regards
Sam |
06-25-2012, 09:17 PM
|  | Endorsing Artist: Wild Turkey Bourbon | | Join Date: Jul 2008 Location: The Wilds of NW Pa. | | Quote:
Originally Posted by JohnMCA72 They just press on. Trouble is, they fall off easily! | I think the OP is asking about broken faders, rather than missing caps. These are often held in place with rivets. I'm not familiar with 3Pro guts, but if the faders are riveted in, you have to drill the rivets to replace them.
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06-25-2012, 09:19 PM
| | Registered User | | Join Date: Apr 2007 Location: Finland (Northern Europe) | | Hi. Quote:
Originally Posted by JohnMCA72 They just press on. Trouble is, they fall off easily! | 
The knobs, yes, but the slider with a partially or fully broken tang, not that much.
Regards
Sam |
06-25-2012, 09:51 PM
| | Registered User | | Join Date: Jun 2007 Location: New Hampshire, USA | | | What I'm referring to is the tang, which has broken off right at the faceplate of the amp, but not the entire fader itself. The PO usually says it is operable, but one must use some sort of tool to connect with the remainder of the slider just inside the face.... I mis-termed it a "knob". It is indeed a "tang", that which one uses to move the EQ slider up or down.
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Jeff Brown - Mediocre Bassist Club #402, Fender Jazz Bass Club #772, NH Bassists #16
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06-25-2012, 09:54 PM
|  | keepin' the beat since the 60's | | Join Date: Dec 2007 Location: Studio City, SoCal, USA | | | Even missing caps is a big deal - getting the part may be impossible. If the slider had a plastic shaft that is broken off, that is a much bigger deal.
The slider is probably soldered to a PCBoard inside, so you have to disassemble the unit, removing the inside front panel that all the controls are soldered to, and then have to have the proper tools to de-solder it and then re-solder a new one, IF you can get the part from the maker. Probably not even something that they sell to end users.
Perhaps you should get a quote on the repair from a qualified repair shop, and use that in your negotiations with the seller.
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06-25-2012, 10:01 PM
| | Registered User | | Join Date: Jul 2009 Location: Willmar, Minnesota | | Quote:
Originally Posted by Bassamatic Even missing caps is a big deal - getting the part may be impossible. If the slider had a plastic shaft that is broken off, that is a much bigger deal.
The slider is probably soldered to a PCBoard inside, so you have to disassemble the unit, removing the inside front panel that all the controls are soldered to, and then have to have the proper tools to de-solder it and then re-solder a new one, IF you can get the part from the maker. Probably not even something that they sell to end users.
Perhaps you should get a quote on the repair from a qualified repair shop, and use that in your negotiations with the seller. | All true, but you run the risk of being ridiculed as fussy or a nitpicker cuz it werks just fine for me...
If the price is right, I'd overlook a "cosmetic" defect if the function (however inconvenient it may be) is still there. Odds are the repair is more expensive than most cheap amps are worth.
I did buy an amp missing a tang end on a slider - but still functional. The parts were not available at any price. After a while it annoyed me to the point I just couldn't stand looking at it and dumped it for cheap to someone who just wanted a working amp. Guess I am fussy with my equipment. 
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06-26-2012, 12:48 AM
|  | Registered User | | Join Date: Dec 2010 Location: Manitoba, Canada | | | Just so's y'all know, hardware doesn't mean amps, setup doesn't mean yer rig, this section is about the bass; the instrument itself. Your question belongs in "amps" section. Just so's y'all new fellers know.
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06-26-2012, 07:19 AM
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