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Old 3rd June 2015, 12:26 AM   #1
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Default t10001bd RF

Red board

Anyone know the part# for Q3 and Q4 ?
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Old 3rd June 2015, 02:29 AM   #2
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I don't think the board colors are indicative of the year model. The board number is what you need to post. I've attached a photo from a red board. Is it the same as yours? MMBT3904 and MMBT3906.
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File Type: jpg IMG_5060x.jpg (218.0 KB, 62 views)
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Old 4th June 2015, 04:37 AM   #3
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I have seen them with red boards, green boards, and blue boards. Didn't really pay attention to the revision letters on each color.
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Old 4th June 2015, 02:53 PM   #4
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The above pic is the same layout as mine thanks for the info.

If i used the IRFP064n in the power supply do i need to change the gate resistor?
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Old 4th June 2015, 08:30 PM   #5
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The 22 ohm resistors are OK.
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Old 5th June 2015, 11:45 PM   #6
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After i install FETS on the mesha the thermistor is no where to be found.
Can i used the thermistor like the one in the T400-4 in this amp?
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Old 6th June 2015, 12:14 AM   #7
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You can use a different style thermistor but you need to know the value. On the diagram, there are two thermistors on the MEHSA strips and a third one elsewhere. The 3rd one has a different pulldown resistor value so the thermistors on the MEHSA insulators may not be the same as the standard 10k thermistors Rockford uses. Contact Rockford to get the value (not on the diagram) or measure the other MEHSA mounted thermistor in the amp (would require breaking the connection to the rest of the protection circuit). The thermistor must be at room temperature to measure its value.
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Old 6th June 2015, 07:14 PM   #8
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The fan in this amp does not work. I get 13v on the terminals when i unplug the fan.When it is plug in I get 0v.The fan is good i tried it on the B+
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Old 6th June 2015, 07:58 PM   #9
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The fan is thermally controlled. It only runs when the amp is hot. It's supposed to start at 60C.
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Old 11th June 2015, 04:20 PM   #10
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I want to bypass that thermal circuit and have the fan working as soon as remoter is applied.
where can i connect it?
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