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MTX 6500D repair
MTX 6500D repair
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Old 26th May 2006, 08:58 PM   #1
bil is offline bil  Canada
diyAudio Member
Join Date: May 2006
Question MTX 6500D repair

Hi, i have an MTX 6500D blown. The electronic component labeled Q673 is blown and i don't know what it is. It is marked on top : 1D. Does anyone know what it is so i could replace it?

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Old 27th May 2006, 07:28 PM   #2
Perry Babin is offline Perry Babin  United States
diyAudio Member
Join Date: Nov 2003
Location: Louisiana
There are several components that use that code but it's likely an MPSA42. The following link will help you to determine the part number of various SMD semiconductors. If you lose this link, search for 'SMD codebook' with google and it will likely be the first link.

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Old 27th May 2006, 11:00 PM   #3
swordfish689 is offline swordfish689  Canada
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Join Date: Jan 2005
Location: The Great Lakes
its actually a MMBTA42 , Im really surprised that would blow, i've never seen one blow in the power supply side.
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Old 29th May 2006, 06:19 AM   #4
bil is offline bil  Canada
diyAudio Member
Join Date: May 2006
Yes, me too but actually he didn't blow, a capacitor 470nj near him burned and the semi-conductor and the pcb burned. The big capacitor also blew up. But the output transistor seems to be fine. Thank you for the advice i will try that.
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