Transistor Part Numbers for Q130-Q139 in a Kole PH2-3000D - diyAudio
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Old 17th November 2012, 01:26 PM   #1
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Default Transistor Part Numbers for Q130-Q139 in a Kole QX1-3000D

Hi Folks, many thanks to all who post here; I've learned so much from everyone's contributions.

Can anybody take a peek (or if you know offhand) what the part numbers for Q130-Q139 are in a Kole QX1-3000D?

Fixed title to reflect QX1-3000D model number, my fault..
If a MOD can fix the title to reflect correct model in post #3, that would be awesome, was asleep at the wheel. Also the thread title...

Going behind a hack job, client picked it up after a month of no progress with half the parts missing, brought it to me.

Also, anybody know where to source the fans used in those amps?

Thanks!

Last edited by whitejohnny; 11th December 2012 at 07:07 AM. Reason: fix title to reflect correct QX1-3000D model number
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Old 17th November 2012, 02:09 PM   #2
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If no one can answer the question, post a photo of the board. It's likely a clone.
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Old 17th November 2012, 07:26 PM   #3
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Default pics of PH2-3000d

Here we go:
Attached Images
File Type: jpg amp1.jpg (89.3 KB, 84 views)
File Type: jpg amp2.jpg (213.3 KB, 81 views)
File Type: jpg amp4.jpg (125.7 KB, 80 views)
File Type: jpg amp5.jpg (124.7 KB, 79 views)
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Old 17th November 2012, 07:34 PM   #4
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Q130-138 are IRFB31N20Ds.
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Old 17th November 2012, 11:57 PM   #5
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Default Excellent, Thanks for the ID

Thanks Perry.

Does it look like something else you're familiar with?
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Old 18th November 2012, 02:41 AM   #6
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It's a clone of many other types of amplifiers. IF you're repairing this amp, you should replace Q124 and Q125 on the driver board, even if they appear to be OK.
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Old 18th November 2012, 11:15 AM   #7
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Default Replacing Q124 and Q125

Are Q124 and Q125 the drivers for the output section? Or what is their function?

There are several parts on the driver board with really bad or missing solder...

Q124 and Q125 are MPS-A42?

K, Thanks Perry!
Attached Images
File Type: jpg driver1.jpg (228.4 KB, 68 views)
File Type: jpg driver2.jpg (213.7 KB, 36 views)

Last edited by whitejohnny; 18th November 2012 at 11:20 AM.
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Old 18th November 2012, 11:41 AM   #8
rrae is online now rrae  Norway
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yes, you should replace these by default on these driver cards. use mpsw42 for replacement and put them closer to fan
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Old 18th November 2012, 01:25 PM   #9
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Also replace Q116 with an MPSW92. Check R190 and R173. They both appear to have overheated. As was previously stated, install the transistors so that they're closer to the fan blades.
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File Type: jpg IMG_9705b.jpg (279.0 KB, 42 views)
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Old 19th November 2012, 11:01 AM   #10
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Default Is the fan a standard 12volt, such as is used on a pc heatsink?

The fan was missing on this amp and at the moment I haven't another one around to check, is it a regular 12volt fan such as from a computer heatsink?

Thanks for the advice guys, I'll change the transistors and resistors. Any other parts you might recommend refreshing, or common failure points you might mention?
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