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Re: Kustom IV Lead Guitar Amp Head need schematic! [message #4618 is a reply to message #4610] |
Tue, 03 August 2004 21:33 |
VinceG2
Messages: 26 Registered: April 2004
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Junior Member |
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Roll wrote on Mon, 02 August 2004 13:46 | Thanx for answering stevem,
but i only want to know the right type of the first Transistor
(first Trans. in the Input stage) of the second channel.
The Transistor is coded as "S35677" "409"
I live in Europe so the way to get a schematic is not simple as to get it from the States.
Roll
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I checked "S35677" with NTE and nothing showed up. However, "35677" shows up as the following:
Industry Number : 35677
NTE Device Number: NTE102A
T-PNP,GERMANIUM AF PREAMP,DRIVER,TO-1
I also checked 2SC409, but that shows this:
Industry Number : 2SC409
NTE Device Number: NTE163A
T-NPN,SI-HORIZ DEFL OUTPUT,TO-3
So I doubt it's a 2SC409, but may very well match the NTE102A transistor since it's a audio preamp driver. You can compare your transistor to the NTE info here:
http://www.nteinc.com/specs/100to199/pdf/nte102a.pdf
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Re: Kustom IV Lead Guitar Amp Head need schematic! [message #7741 is a reply to message #7739] |
Mon, 16 October 2006 13:27 |
kfc333
Messages: 4 Registered: October 2006 Location: Branson, MO
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Junior Member |
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Hi,
Yes, the reverb tank is fine. I had checked resistances of both transducer coils and all was fine, plus I tried it in another Kustom and it worked fine. I get a strong signal out of the PCB jack that goes to the tank's input, but when injecting a signal into the "receive" jack on the PCB, the sound is barely audible and it's all distorted. Plus, both the collector and emitter of the "receive" side transistor measure around -0.62 volts. That gives me a good clue that the transistor is shorted from collector to emitter.
As for the switches, great idea!!! While I never had one fail in the many, many years of using a K250 (I care for my amps like they are a baby), I will do what you suggest anyhow. Can't be too safe!
Again, thanks for the help.
Keith
KFC
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