Tektronix TDS320 PSU

Terry Marsh · 12-31-2008, 12:44 PM

Can anyone enlighten me as to TO220 transistor type in location Q1
mounted on the primary heatsink of the power supply.
I have replaced all other defective components, but Q1
has a large hole blown in it, so am unable to identify it.
Thanks.

LordKim · 07-02-2009, 09:10 PM

Quote:

Originally Posted by Terry Marsh

Can anyone enlighten me as to TO220 transistor type in location Q1
mounted on the primary heatsink of the power supply.
I have replaced all other defective components, but Q1
has a large hole blown in it, so am unable to identify it.
Thanks.

The indications I read on this transistor are :
T I
P50
214
with an additional M circled which means Motorola.
I found easier to replace all the power supply, you need 2 x 5V,1 x 15 V,1 x 8.6V ,1 x -8.6 V, 1 x -5V and 1 x 12 V if you have option 14.
I hope this will be helpful to you.

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