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Old 26th October 2011, 08:46 AM   #1
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Default Kenwood Hybrid IC KMA01

Hi,

my old Kenwood CS4025 scope gave up last week. After searching for a while (which is quite difficult without a scope) I think the hybrid ic KMA01 is faulty. I looks like there are two opamps, a small cap, a fet or transistor and a resistor on it.
The simplest thing would be to get a new (used) one. The alternative would be to build a new one.

Does anyone know where to get a new one?
Does anyone have a schematic of the KMA01?

Thanks,

William
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Old 19th December 2011, 12:08 PM   #2
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Hi William,

I have same problem with a scope CS 4025 too. The source is with voltage values different in relation to manual service Kenwood .

I don't find high voltage in TRC.


and i don't find nothing about KMA01
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Old 1st January 2013, 09:33 AM   #3
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KENWOOD CS-4025 U1 KMA01 CIRCUIT schematic
Attached Images
File Type: jpg KENWOOD CS-4025 KMA01.JPG (31.2 KB, 63 views)
Attached Files
File Type: doc PCB KMA01 CS4025.doc (46.5 KB, 19 views)

Last edited by 1triphet; 1st January 2013 at 09:52 AM.
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Old 1st January 2013, 09:56 AM   #4
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PCB KMA01
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Old 1st February 2014, 02:18 PM   #5
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Default Leader Scope with KMA01 fault

Hi.....
I am an electronic engineer and a new one in this forum!
I have the Leader 8040 scope with the same problem, KMA01 hybridr IC fault.
I downloaded your's KMA01 schematic and the picture with the pcb for a new one, handmade KMA01.
Do you know, where can I find a new one KMA01?
If there is no possibility to find a new one, Ok...I am going to build the handmade with your pcb.

Thank you very much!
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Old 15th February 2014, 10:20 AM   #6
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Default KMA01 Pcb placement

Dear Sir!
Can you send me the placement of the KMA01 pcb board components, because I believe it has some errors or I do a wrong component placement.

Thank you!
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