K200-B1 Replacement output transistors [message #20431] |
Sun, 06 April 2014 19:28 ![Go to next message Go to next message](/FUDforum/theme/vk30/images/down.png) |
Eros Segovia
Messages: 6 Registered: April 2014
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Junior Member |
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Good Day ..
I'm from the north of mexico, I have an amplifier Kustom K200-B1.
the power is damage, check the output transistors and have no identification number to replace with new, as they mark 2 damage with multimeter in Ohms scale.
Can anyone help me if they have the numbers of transistors replacement?
they are greatly appreciate ..
Greetings.
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Re: K200-B1 Replacement output transistors [message #20433 is a reply to message #20431] |
Sun, 06 April 2014 23:24 ![Go to previous message Go to previous message](/FUDforum/theme/vk30/images/up.png) ![Go to next message Go to next message](/FUDforum/theme/vk30/images/down.png) |
chicagobill
Messages: 2005 Registered: April 2003
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Senior Member |
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Welcome to the place. The original output transistors are selected 2N3055 types. Almost any high power NPN transistor will work in this circuit.
If you replace them, I would suggest that you go ahead and replace all four with the same type.
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Re: K200-B1 Replacement output transistors [message #20446 is a reply to message #20431] |
Tue, 08 April 2014 06:48 ![Go to previous message Go to previous message](/FUDforum/theme/vk30/images/up.png) ![Go to next message Go to next message](/FUDforum/theme/vk30/images/down.png) |
stevem
Messages: 4758 Registered: June 2004 Location: NY
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Senior Member |
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Hello again!
If you can not find the semiconductors you need to repair the amp in Mexico then the closest US supplyer to you would be Mouser electronics in Texas.
They stock NTE semiconductors.
The output transistors are NTE 130 like I posted before, but if you need more than two of them I would order NTE130MP which is a matched pair.
If you need 3 output transistors, order two matched pairs.
The orignal driver transistors in the heatsinked boxes(38737 and 38736) cross over to NTE129 and NTE128 respectivly.
These do not have the box heat sink anymore so you will need a slip on top hat type heat sink for each transistor.
Another good repplacement for the oringinal RCA output transistors would be Motorola MJ15050.
The amps 3 amp fuse is likly blown also and you will need to order one of those.
If you have never worked on electronics before I would get the amp repaired by a electronic repair tech and have him contack us if he has any questions.
[Updated on: Tue, 08 April 2014 07:00] Report message to a moderator
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Re: K200-B1 Replacement output transistors [message #20474 is a reply to message #20446] |
Sun, 13 April 2014 19:14 ![Go to previous message Go to previous message](/FUDforum/theme/vk30/images/up.png) |
Eros Segovia
Messages: 6 Registered: April 2014
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Junior Member |
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Thanks Compadre. Good Afternoon ..
I had the problem with the RCA 38737 transistor (Q705). was burned.
but I found the solution answers that tell me it's the NTE 129.
I could already find in electronics stores in northern mexico. the city is Torreon Coahuila, / Gomez Palacio Durango.
replacement transistor 2N 3055., which is not expensive. and this at great cost.
Thanks for the help. Compadres.
Greetings ...
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