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kasino club U-100p [message #16135] Tue, 27 September 2011 23:31 Go to next message
vivalaanalog is currently offline  vivalaanalog
Messages: 6
Registered: September 2011
Location: NE
Junior Member
I recently picked up a kasino club u100p pa head i believe, an old Wurlitzer orbit, and a Hammond draw bar organ with the Hammond synthesizer from a fellow for free off craigslist. I have got everything in working order except the kasino. I opened it up and noticed the leads to the power transformer were not connected to anything and couldn't find where they lead to. also the caps look unoriginal because they don't quite fit in the original sockets and it says it has reverb but i couldn't find a tank, is it digital? any help on this would be great, id love to get this up and running.

Thanks,
Dave

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Re: kasino club U-100p [message #16137 is a reply to message #16135] Wed, 28 September 2011 12:11 Go to previous messageGo to next message
chicagobill
Messages: 2005
Registered: April 2003
Senior Member
Welcome to the place. It sounds like someone has been "repairing" your amp before you got it. Well the price was right.

What wires from the transformer are disconnected? The primary wires are usually black and the secondary wires are usually purple or yellow or some other color.

The reverb is analog, and the tank is supposed to be mounted at the top of the chassis. It is suspended from two aluminum tubes that span across the top edges of the chassis. If you look for them, you will find the 4 screw mounts where the tubes were originally screwed in.

If you post a few photos of the chassis, we can all get a better idea what has been "repaired".

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Re: kasino club U-100p [message #16138 is a reply to message #16135] Wed, 28 September 2011 18:47 Go to previous messageGo to next message
stevem is currently offline  stevem
Messages: 4733
Registered: June 2004
Location: NY
Senior Member
It sounds like your amp is missing the bridge rectifier( a fancy name for 4 diodes pre wired) which is/was bolted down on the floor of the amp right next to the PT, which means you should see a un-ocuiped hole on the floor of the amp where the 6/32 machine screw went thru.

To me this item being missing means this amp could have big trouble in the output stage, but fear not as we can walk you through the test out steps needed to bring it back to life once again!

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Re: kasino club U-100p [message #16145 is a reply to message #16135] Thu, 29 September 2011 10:08 Go to previous messageGo to next message
vivalaanalog is currently offline  vivalaanalog
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Registered: September 2011
Location: NE
Junior Member
Thanks for the swift response guys Razz well thats a bummer if its missing parts, but like you said i you cant beat the price. its the two black wires. i will take some pictures of inside and post them up later this evening.

thanks again.
Dave

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Re: kasino club U-100p [message #16146 is a reply to message #16135] Thu, 29 September 2011 11:42 Go to previous messageGo to next message
chicagobill
Messages: 2005
Registered: April 2003
Senior Member
Well we don't know if it's missing parts yet, that's where the photos will help. Usually the black wires are the ones that connect to the power switch and fuse.

Once we see the pics, we can tell you more.

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Re: kasino club U-100p [message #16195 is a reply to message #16135] Sun, 09 October 2011 18:50 Go to previous messageGo to next message
vivalaanalog is currently offline  vivalaanalog
Messages: 6
Registered: September 2011
Location: NE
Junior Member
sorry about the delayed response and terrible photo quality.

http://www.flickr.com/photos/68541448@N08/6228210114/
http://www.flickr.com/photos/68541448@N08/6227692227/
http://www.flickr.com/photos/68541448@N08/6227692099/
http://www.flickr.com/photos/68541448@N08/6227691967/
http://www.flickr.com/photos/68541448@N08/6227691667/
http://www.flickr.com/photos/68541448@N08/6228209456/
http://www.flickr.com/photos/68541448@N08/6228209398/
http://www.flickr.com/photos/68541448@N08/6227691477/

[Updated on: Sun, 09 October 2011 18:51]

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Re: kasino club U-100p [message #16201 is a reply to message #16195] Mon, 10 October 2011 07:15 Go to previous messageGo to next message
pleat is currently offline  pleat
Messages: 1452
Registered: June 2004
Location: Belding, Mi
Senior Member
Looks like your missing the thermister on the power transistor rail.
pleat

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Re: kasino club U-100p [message #16203 is a reply to message #16135] Mon, 10 October 2011 12:16 Go to previous messageGo to next message
chicagobill
Messages: 2005
Registered: April 2003
Senior Member
As usual Pleat is right, the thermal cutoff switch has been removed. Someone has also added an inline fuse holder to replace the soldered in fuse. The caps have probably been replaced, and the reverb tank normally is mounted to two aluminum tubes that span the width of the chassis.

The cutoff switch is there to shut off the power to the amp if the output transistors reach a temperature that may cause them damage. I believe that the original ones were rated for 180F degrees or so.

For testing purposes the two wires that you are holding in the one photo can be connected together, to see if the amp is otherwise in working condition. These wires carry the full 120 volt ac line, so they must be handled carefully and should be taped off to prevent any accidental shocks or shorts.

I don't know what your skill level is, so I will warn you that there are voltages inside this amp that can kill you. If you are not certain how to go about these repairs, then don't. Get help from someone that is qualified.

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Re: kasino club U-100p [message #16204 is a reply to message #16135] Mon, 10 October 2011 12:32 Go to previous messageGo to next message
vivalaanalog is currently offline  vivalaanalog
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Registered: September 2011
Location: NE
Junior Member
thanks so much for the the help! although i consider myself novice at best, i understand the risks involved and always take proper measures to insure my safety by discharging all components that hold a charge after its been unplugged. any suggestions on a replacement thermal cut off? also is there any where to find a replacement reverb tank? you guys are awesome and i really appreciate the help you have given.

Dave.

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Re: kasino club U-100p [message #16205 is a reply to message #16135] Mon, 10 October 2011 15:21 Go to previous messageGo to next message
chicagobill
Messages: 2005
Registered: April 2003
Senior Member
I haven't found a replacement for the cutoff yet, maybe one of the others here has some ideas.

Reverb tanks are available from Antique Electronics.

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Re: kasino club U-100p [message #16209 is a reply to message #16135] Tue, 11 October 2011 07:34 Go to previous messageGo to next message
stevem is currently offline  stevem
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Registered: June 2004
Location: NY
Senior Member
I will look up a cut off sorce tonight and post it up.

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Re: kasino club U-100p [message #16212 is a reply to message #16209] Tue, 11 October 2011 14:20 Go to previous messageGo to next message
vivalaanalog is currently offline  vivalaanalog
Messages: 6
Registered: September 2011
Location: NE
Junior Member
i think i may have found the old one floating around inside of it! but one of the leads is busted off, is it still usable? or should i just order a new one?

thanks again!

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Re: kasino club U-100p [message #16215 is a reply to message #16135] Tue, 11 October 2011 17:39 Go to previous messageGo to next message
stevem is currently offline  stevem
Messages: 4733
Registered: June 2004
Location: NY
Senior Member
Just get a new one.
Its marked with what temp its rated to open at on the side of its case, I forget if they say 160, 186.

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Re: kasino club U-100p [message #16226 is a reply to message #16215] Tue, 11 October 2011 23:38 Go to previous messageGo to next message
vivalaanalog is currently offline  vivalaanalog
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Registered: September 2011
Location: NE
Junior Member
it doesnt have any markings on the side, it just says elmwood sensors 2455 on the top. but no thermal rating.

[Updated on: Tue, 11 October 2011 23:38]

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Re: kasino club U-100p [message #16228 is a reply to message #16135] Wed, 12 October 2011 07:24 Go to previous messageGo to next message
stevem is currently offline  stevem
Messages: 4733
Registered: June 2004
Location: NY
Senior Member
I will check in one of my amps tonight and post what I find.

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Re: kasino club U-100p [message #16241 is a reply to message #16135] Thu, 13 October 2011 06:36 Go to previous message
stevem is currently offline  stevem
Messages: 4733
Registered: June 2004
Location: NY
Senior Member
The new thermal breaker you buy should be rated for a temp of 185, but one thing a did notice that I had not before last night is that my K100-2 head does not,nor did it ever have a thermal breaker!
I need to look at all of my K100 schematics and see if that whole line of amps ever even had the breakers, if I where to guess at this I think they show up in the K150 plexi face combo amps that are built like the later metal face k150s with a choke transformer in the power supply.
At any rate it certainly would not hurt to install one if you do not mind the work it would take.
You will also need to place a dab of silicone dielectric grease between the two mounting surfaces of the breaker. this stuff can be had in tubes from auto parts stores or electronic supply stores.

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