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| Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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#1
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Advent 300, NTE 188, ECG188, 2SC1628, MPSU06,MPSU04, = NTE190 ?
Working on an old Advent 300,(FM and 15 watt amp) found a shot MPSU02.
Apparently the same as a MPSU06 and U05 and NTE188. NTE 188 no longer made will the NTE 190 do the job? Following the service bulletin updates from a very looong time ago....any issues? |
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#2
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Raymond,
The MPS-U02 is listed in the Towers transistor spec book as an NPN, 60V, 800ma, 6W device with a beta of 50 to 300 and an F(T) of 150MHz. I'd suggest a 2SD669A as a substitute, which is a TO-126 package, but you could use many different TO-220 transistors that you might have around. I like the 2SD-613 or BD-911. BE CAREFUL of the lead configuration. As I recall the MPS-U02 has the base in the middle, so you might have to put a piece of sleeving and overlap the leads to get them in the correct positions on a replacement. Regards, Tim Schwartz Bristol Electronics Raymond Collins wrote: Working on an old Advent 300,(FM and 15 watt amp) found a shot MPSU02. Apparently the same as a MPSU06 and U05 and NTE188. NTE 188 no longer made will the NTE 190 do the job? Following the service bulletin updates from a very looong time ago....any issues? |
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#3
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Raymond Collins wrote:
Working on an old Advent 300,(FM and 15 watt amp) found a shot MPSU02. Apparently the same as a MPSU06 and U05 and NTE188. NTE 188 no longer made will the NTE 190 do the job? Yes, it will do. Or you can use a BD139 (NTE373), not exactly the same, but easier to find. --- Ing. Remberto Gomez-Meda http://ingemeda.tripod.com/ INGE - Ingenieria Electronica. Puerto Vallarta, Jalisco, Mexico. |
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#4
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Thanks for the help guys, got it up and running, some noise issues, I
put in all new caps (probably one is in ass backwards), sounds pretty good on FM so far. Clean Thanks again. El Meda wrote: Raymond Collins wrote: Working on an old Advent 300,(FM and 15 watt amp) found a shot MPSU02. Apparently the same as a MPSU06 and U05 and NTE188. NTE 188 no longer made will the NTE 190 do the job? Yes, it will do. Or you can use a BD139 (NTE373), not exactly the same, but easier to find. --- Ing. Remberto Gomez-Meda http://ingemeda.tripod.com/ INGE - Ingenieria Electronica. Puerto Vallarta, Jalisco, Mexico. |
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