Re: My amplifone monitor... update

At 11:09 AM 11/20/97 -0600, you wrote:
>
>On Thu, 20 Nov 1997, Dan Rasmussen wrote:
>
>> I had hoped that the new transistors (Q16, Q17) had solved the problem.
>> After watching the sparks (plasma) fly, I figured Q14 and/or Q15 were
>> the problem. Sure enough, I pulled out Q14 and it was shorted all the
>> way around (I think Q15 had problems too). The transistors on the other
>> side of the board (Q4, Q5) seem to be OK. So, where can I find these
>> parts: MPS-U07 and MPS-U57? The Woodcock/Scheive material I have looked
>> at tells me that NTE188 and NTE189 are equivalent parts.
>>
>
> I haven't used the NTE replacements (I have no doubt that they
>work, though) but if the prices are too ridiculous (as the prices on some
>NTE stuff is) you might try Competetive Products. I bought some MPS-U57s
>from them a couple of months ago for like $1.50 each. I think they have
>MPS-U07s, too, but for some reason, the U07s seem to be common around
>here, so I just bought them from my neighborhood electronics store...
>
>Joe
>
>
>

I have used the NTE replacements ... and yes, Joe is correct that they are
ridiculously expensive. But, I am the type of person who hates waiting
around for parts :)

Mit
Received on Thu Nov 20 09:39:15 1997