kasino club [message #15564] |
Tue, 26 April 2011 12:08 |
hammondm3
Messages: 10 Registered: April 2011
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Junior Member |
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Hi, I'm new to the forum and to repairing amps and have just bought my first Kustom, a Kasino Club pa head marked model U100. I want to use it for keyboards, especially my Hammond M3 (which has a 1/4" line out). I have a speaker cabinet with a single 12" 8 ohm full range speaker for practice. I have some questions. As you face the back of the amp on the left are two 1/4 " jacks labeled "speaker output" and "One 8 ohm or two 16 ohm loads." How should I hook up the single 12" speaker? Do I just use one of the outputs ( and if so which) or both? Also, I am going to replace the filter caps and add a three prong grounded power chord. I don't know if I need to do anything else, but does anyone have a schematic for sale? I'd like to get one so I can work intelligently on this.
Any and all help and advice is greatly appreciated.
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Re: kasino club [message #15565 is a reply to message #15564] |
Tue, 26 April 2011 15:37 |
chicagobill
Messages: 2006 Registered: April 2003
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Senior Member |
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Welcome to the place. I used to have an M3-Blond. Great organ.
The speaker jacks are wired in parallel, so use either one with your 8 ohm cabinet.
As for schematics, if you remove the chassis you will find a number etched into each circuit board in the amp, like PC5065. Post all of the ones that you need and we'll see if we have them to send you.
What is wrong with the amp? Is it humming? Why do you want to replace the filter caps?
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Re: kasino club [message #15566 is a reply to message #15565] |
Tue, 26 April 2011 17:55 |
hammondm3
Messages: 10 Registered: April 2011
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Junior Member |
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Thank you and thanks for the info. Yes, it has a pretty pronounced hum and when I took it apart to clean the pots ( they were slightly scratchy, but problem solved now) I noticed that one of the filter caps was covered with a white, crystaline deposit on top and down the sides. It was also bulging slightly on top. I figured it would be good to replace them both with new ones. I don't know much at all about amps but I do rebuild old tube radios and am familiar with filter caps going bad, so I thought that would be a good place to start. I thought of putting the grounded power cord on just as a safety upgrade. I have new filter caps ( Mallory, 2900's 50 vdc, the originals in there are 2300's 50vdc) so I'll put them in and see what happens.
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Re: kasino club [message #15568 is a reply to message #15567] |
Tue, 26 April 2011 20:58 |
hammondm3
Messages: 10 Registered: April 2011
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Junior Member |
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Thanks, that makes sense and thanks for the numbers. As soon as I replace the filter caps I'll see how it sounds and go from there. Then those numbers you listed might come in very handy. Even if everything sounds good I'd like to get schematics of the boards anyway as I plan to keep and use the amp a long time. I've found it's always good to have the technical info for something you can work on! I'll get to that asap. My wife just had a baby a week ago, so things are still a little hectic around here and I haven't had time for the amp, needless to say. But I will in the next few days.
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Re: kasino club [message #15583 is a reply to message #15580] |
Tue, 03 May 2011 11:22 |
hammondm3
Messages: 10 Registered: April 2011
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Junior Member |
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Thanks for the info! I put in the filter caps and a three prong plug and when I get a minute I'll plug it in and see how it sounds. ( Things have been hectic as of late-- plumbing).
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Re: kasino club [message #15722 is a reply to message #15720] |
Fri, 27 May 2011 12:04 |
hammondm3
Messages: 10 Registered: April 2011
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Junior Member |
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Thanks for the good info. I did not know about the death cap. Looking into the amp, I think I can see the cap you are talking about. It connects, as you say, to the power switch and goes to the chassis. It is the only cap I can see connected to the power switch so that would be the one, right? So it should be disconnected, which makes sense. Could it also be replaced with a Y2 cap? I was just wondering if that would be a safe alternative because if it is the cap i am thinking of , it is on the second position of the power switch that helps attenuate hum and removing it would get rid of that feature. On the other hand, if this is a dangerous idea, then I will be more than happy to remove the cap and leave it like that. What are your thoughts on that?
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Re: kasino club [message #15742 is a reply to message #15723] |
Wed, 01 June 2011 02:34 |
hammondm3
Messages: 10 Registered: April 2011
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Junior Member |
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I'll bet it was! Well, I guess I'll just leave it out. I mostly play at home and my place is pretty old and doesn't have grounded outlets. That's why I thought about a Y2 cap. I figured I'd add a three prong chord for when I play elsewhere. Perhaps I should just add a ground wire and rod at my place and do it up right. Thanks for the helpful info!
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Re: kasino club [message #15822 is a reply to message #15742] |
Fri, 10 June 2011 22:43 |
hammondm3
Messages: 10 Registered: April 2011
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Junior Member |
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Well, I plugged it in and it sounds pretty good! There is a 60hz coming in from the organ itself, but I think I can fix that with a d.i. box in the input line from the organ. The amp, however, sounds really nice. Good reverb, nice volume. Thanks to everyone for their helpful advice. The only thing left to do is to now repair the number 4 channel on the amp, as it doesn't have any volume at all. I'll further investigate and post what I find out.
Thanks again.
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Re: kasino club [message #15823 is a reply to message #15822] |
Sat, 11 June 2011 00:26 |
w0ttm
Messages: 12 Registered: April 2011 Location: Small town Mo. on RT66
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Junior Member |
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That's one of the attractions of vintage Kustom amps.
They last forever and sound great.
The singer in my 70's band still has his Kustom 200, and after two house fires and a flood, it still works. Not 100%, but it works.
My Kasino club is in service at my church as a monitor amp, replacing a name brand amp that lasted a bit over a year before toasting itself.
About your dead channel. One of the few issues I've had with these amps is with tantalum capacitors. It's not a design flaw, that type of cap can be persnickity. That's where I'd look first.
Fortunately, you have 3 good channels as a reference.
By the way, our keyboardist in that 70's band had a Hammond M3.
It weighed almost as much as my ex wife........
[Updated on: Sat, 11 June 2011 00:28] Report message to a moderator
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Re: kasino club [message #15831 is a reply to message #15822] |
Sat, 11 June 2011 15:52 |
cassent5150
Messages: 341 Registered: August 2009
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Senior Member |
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I'D check the 3 transistors across the top, and if I were a betting man I'd bet it was the se4002 (or PET8002 in some models) on the corner right above the reverb control. If not, the 2n3638 or se4002 above the volume control has an open circuit inside.
Steve C
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Re: kasino club [message #15833 is a reply to message #15831] |
Sat, 11 June 2011 23:16 |
hammondm3
Messages: 10 Registered: April 2011
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Junior Member |
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Thanks, I'll check those out. Where is a good place to buy those transistors? And as for the tantalum caps, I'll look at the schematic and see where they are. If it is them, what type should I replace them with?
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Re: kasino club [message #15836 is a reply to message #15833] |
Sun, 12 June 2011 13:28 |
cassent5150
Messages: 341 Registered: August 2009
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Senior Member |
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I'm not a tech so I can only give opinioinated advise. As many of these as I have worked on there are a few that will really effect your sound, but for the most part I have used tantulum type for tantulum replacement even though an electrolytic can type will work. If your looking for a place to get exact replacements or suitable replacements you can call Mouser Elecronic Component Supply and order it by phone or on the web and have is sent to your door for like 6 bucks. I usualy call them myself, just get the # off the internet web site. NTE has a site you can order suitable replacements also for the transistors. I learned the hard way to not replace more than needed cause it can create more problems than you solve sometimes. Even if they're suitable replacements they are not exact to specs and too much change in the cicuitry seems to throw everythiny out of ballance if you know what I mean.
LETS SEE:
Replacement for the SE4002 or PET8002 will be an NTE-123AP. Allthough for those across the top of that a few more would be like a 2N5088/2N5089 or my favorite 2N3565 which is super quiet and still high gain. I have rebuilt 2 of those preamp cicuits with the 2N3565 in choice places and about eliminated the hiss, but there is a draw back. You loose some of the clean headroom, but the distortion you pick up is so much tighter and warm sounding. You can still get the 2N3638 but it comes in a TO-92 package so make sure you pin it right on the instalation.
Steve C
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