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fatboy 2pill key problem

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  #11  
Old 08-10-2009, 10:01 AM
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Thanks, great info and a pic makes it soooo much better.
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  #12  
Old 08-25-2009, 01:07 PM
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Well, put the new transister in and now it wont key at all. Anyone have a scematic for the fatboy 2 pill.

I want to trace everything and see id I can just set it back to am use only but dont know what parts were added to make it ssb compatable.

Here are some pics if it helps someone help me. the job these guys did is pretty bad. I dont even solder this bad and I am no tech.

I am trying to fix this for a friend who has very little money and needs help.

the shop who put the ssb switch in will not even try to help. they put it in and it has not been right ever since.

Thanks,
Airplane1
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  #13  
Old 08-25-2009, 04:50 PM
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it might be a relay to. i hope this helps.
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Old 08-25-2009, 10:36 PM
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When he "unkeys" does the TX LED stay lit? If it doesn't, then what you have described sounds like a dirty contact on the relay when it is in the "open" position or RX position. Burnish the contacts and that should clear up.
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  #15  
Old 08-25-2009, 10:39 PM
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Looks like you need a diode across the relay coil too.
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  #16  
Old 08-26-2009, 04:52 AM
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any way to get a scematic of this. That would help a ton. I see that the relay looks sealed so I dont know if I can get in to clean it. Anyone able to draw a simple scematic of the area I want to fix like the relay, transitor and parts showing how they all get hooked up. If I had that it would help a bunch.
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  #17  
Old 08-26-2009, 05:04 AM
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the orange and yellow wire are going to the ssb switch if that helps to know.I can get better pics too with closer details. I put the new transistor in and now it dont work at all. it powers up but when I key it nothing. I might have put the transistor in wrong as the new one was metal and not plastic and did not have a flat side like the old transistor so I kind of guessed a little as to how it goes.

I am going to buy a a transistor with a flat spot on it like the old one had. I forgot how it was installed now so I will post a little drawing of my own of the keying circuit of how it looks to me and maybe some one can tell me how the transistor goes in. I am buying a new relay too and replacing it right away.

Thanks and sorry for the tons of questions.

Thanks,
Roger
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  #18  
Old 08-26-2009, 01:09 PM
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Here is a drawing of the circuit with the components:



The 2N2222A transistor emitter lead goes to ground, the collector lead to the anode of the diode across the relay coil (you need to add this - 1N4007 (D2)), the base lead to the small RF sampling cap (C10) from the "input" SO-239. The circuit shows a small 22uf 25v cap (C9). For SSB delay, that needs to be run through a switch and increase the value to 1000uf.

If you are deadkeying very small watts out of your radio, the RF Sampling cap value may need to be increased to get the amp to key.

If the relay is bad, since it is sealed, it is easier to just replace it with a new one. It is a 5A DPDT. You can get one here for $2.75:

ICAManufacturing.com - Relays

BTW, in the drawing, the transistor "flat spot", is facing forward.
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  #19  
Old 08-27-2009, 06:01 AM
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Thanks a bunch, this is what I need to figure it out. I am going to take all the keying parts out and start from scratch. I should be good now, I will let you know how it goes or if I have trouble.

Thanks,
AP
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  #20  
Old 09-24-2009, 05:16 AM
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Well I guess I just aint a tech. I can not get it to key at all now. I was searching for a repair shop who works on fatboy amps and seen Redman`s shop in new jersey. He sells fatboys so I emailed him and he says send it in.

My question is did anyone hear good, bad or ugly about Redman? I just want a reputable repair shop.

Unless someone out there can fix it for me or know of a shop who is good.

Thanks,
AP
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