Question about Boston Acoustics Audio Players & Recorders

What are the replacement part numbers for the boston acoustics mcs130 subwoofer transistors Q10, Q10b, abd Q11?

Trying hard to replace the fets of a Boston Acoustics MCS130 subwoofer # Q10, Q10b, and Q11, but I can't read the part numbers off of the transistors themselves. They are fets. Any help is much appreciated! Thank you!

1 Answer

Steve K

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Boston Acous... Master
1,054 Answers

Is the sub dead? Because this is usually caused by ZD3 being shorted....not the transistors.

Posted on Jan 06, 2014

2 more comments
james Mar 10, 2014

hi steve i have the problem were ZD3 has blown but i cant tell what it was what part do i need thanks
Steve K Mar 17, 2014

ZD3 is a 18v zener diode. also check R9 on the back of the board, if ZD3 shorts, R9 may become open - it is supposed to be 10 ohms.
Anthony Lamping May 24, 2014

Do you have a Schematic/Part list? Do you have a Schematic/Part list?
Octavio A Feb 01, 2015

I also have an MCS130 with the same problem. Will turn on but no sound. Originally problem was a 60Hz humming sound, replaced the main capacitors C04, C05, C06, C07 and the humming is gone, but no sound. To be honest not sure if there was sound while humming was on since I didn’t try is because humming was quite loud. Based on the answer above I should look for ZD03 and/or R9, but can’t find them. Any pointers on where exactly are they ?. @Steve. Do you have the schematics ??. Do you repair these units ?

3 Related Answers

Anonymous

93 Answers

SOURCE: how do i connect my boston acoustics pv800

You need to use the LINE LEVEL connection on the pv800 (usually a rca type connector cable) and run this cable into the back of the HK 520 Subwoofer PRE-OUT connector, be sure the HK Receiver menu speaker set-up option is set to SUBWOOFER "YES"

Posted on Jun 12, 2010

James W

1 Answer

SOURCE: I have a Boston MCS130

mine had the same problem until it completely quit. unplug the sub and turn it over, press gently on the speaker cone, does it move freely, or do you hear a sort of scrapping noise? if it moves freely with no noise, its a dif problem than mine. if you do hear the scrapping noise, then theres a short in the voice coil, from what ive read you have to replace the driver (actual speaker part), its basically blown

Posted on Dec 08, 2011

The Knight

76466 Answers

SOURCE: user's manual for boston acoustics tveem25b-01201

Hello
Try these links to get the user manual to your device.
http://www.bostonacoustics.ca/PDFs/tvee_man.pdf
http://www.mccshh.com/pdf/Designer_Month_Mar2012.pdf

Posted on Feb 29, 2012

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