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Old 21st March 2012, 01:55 AM   #11
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Its been awhile since i worked on one of theese can u post a photo of the board and i can tell you what needs to be replaced and give you the part numbers
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Old 21st March 2012, 02:26 AM   #12
DREW028 is offline DREW028  United States
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Can I replace c3228 with 2sc2383?
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Old 21st March 2012, 03:49 AM   #13
DREW028 is offline DREW028  United States
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Click the image to open in full size.
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Old 21st March 2012, 03:51 AM   #14
DREW028 is offline DREW028  United States
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Old 21st March 2012, 08:12 AM   #15
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Try replacing the two transistors in the rectangle in the attached photo.

If you have to order them, order both the MMBTA42 and the MMBTA92.
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File Type: jpg bxi2006daudiodriverboard01b2.jpg (108.4 KB, 105 views)
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Old 21st March 2012, 10:19 PM   #16
DREW028 is offline DREW028  United States
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Can I replace c3228 with 2sc2383?
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Old 22nd March 2012, 11:51 AM   #17
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Post links for the datasheets for the two transistors and indicate where they're being used in the amp.
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Old 22nd March 2012, 01:40 PM   #18
timwebb is offline timwebb  United States
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If I remember correctly that is one of the drive transistors in the power supply
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Old 22nd March 2012, 01:44 PM   #19
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you must control the smd cap
m:K7
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Old 23rd March 2012, 04:44 AM   #20
DREW028 is offline DREW028  United States
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sorry for the lack of information.

ktc3228
KTC3228 datasheet pdf datenblatt - KEC(Korea Electronics) - EPITAXIAL PLANAR NPN TRANSISTOR (COLOR TV VERTICAL DEFLECTION OUTPUT, COLOR TV CLASS B SOUND OUTPUT) ::: ALLDATASHEET :::


i only suggested 2sc2383 because while searching for ktc3228 it had it as an alternative. I cant find that web page nor do i know if its creatable.

Ktc3228 is in q288 location on the board. Pin 1 is tied in with 2 resistors and a cap that leads to the source of 3 output transistors q220 221 222. Pin 3 is tied in with the side of the cap and resistors.
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