How'sja fishing, Trikeman. More ¤!¤#! & smoke? Watt rU willing to pay for a 
2430A? Can't promis, will keep an I 4U on next outsale. Hmmm..220...? 110?
Inge


----- Original Message ----- 
From: "Steven Creswick" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Wednesday, August 05, 2009 6:17 PM
Subject: Re: [TN] Tektronix 744A O-Scope


> Okay Techies,
>
> My turn!
>
> No this is not a Friday thingy.  This is serious!  I have [had] a nice
> Tektronix TDS 744A Digitizing O-Scope that just took a dump on me.
>
> It is obsolete, and Tek no longer services [.... but would do so on a best
> effort basis].  Unfortunately, times are tough and money is even tighter 
> for
> us underemployed types.
>
> I have no schematic ... but upon internal examination what Tek calls the 
> Low
> Voltage Supply, has apparently toasted.  Classic example of a smoked PEM
> device!  Pffft + smoke + stink = hole in mold compound.
>
> Naturally, the toasting event took out the last digit/s of the device part
> number [FEC 2SK101?] so it could be anything from 2SK1010-2SK1019 
> [assuming
> they are all valid].  I've done some searching and have determined that at
> least the 2SK1010 is a 500V N-Ch FET.  Can not seem to dig up a great deal
> of additional info
>
>
>
> 1 - Does anyone have a schematic for a Tektronix TDS 744A??  Have a
> 'special' site to look??
>
> 2 - Does anyone have an 'in' with FEC so that I can get data sheets on the
> range of devices and make a best case guess of what it may have been?
> 2SK1010-2SK1019   The adjacent device is a 2SK1018 ...
>
> 3 - Does anyone have an old Tek TDS 744A they wish to get rid of? 
> [Cheaply -
> I pay freight]
>
> 4 - Anyone have a super cross-reference site to recommend?
>
> Admittedly have not checked the used equipment sites yet.  Nor have I 
> fully
> exhausted all search efforts and cross-reference checks yet, but I know
> there is a wealth of info in this group so I thought I would send out a
> query.
>
> Steve C
>
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