Products > Test Equipment
HP 1741A oscilloscope - restoration project
<< < (10/33) > >>
firewalker:
Very nice!

Results?

Alexander.
BravoV:
Really enjoying your work on fixing old scope TekFan, its an epic. ;)



--- Quote from: tekfan on January 06, 2012, 06:57:36 pm ---I found a discrete transistor with very similar carachteristics as the ones in the IC and soldered it over the IC so that it can be inserted back into the socket.


--- End quote ---

I guess you're going to insulate the replacement transistor pins against touching those cut pins right ?
tekfan:

--- Quote from: firewalker on January 06, 2012, 07:09:12 pm ---Very nice!

Results?

Alexander.

--- End quote ---

I don't know yet. This is as far as I've come.


--- Quote from: BravoV on January 06, 2012, 07:20:18 pm ---I guess you're going to insulate the replacement transistor pins against touching those cut pins right ?

--- End quote ---

Once the IC is in the socket it can't move nearly as much as to touch the cut pins. And even if it does nothing will happen since it's all low voltage low current stuff.
wkb:

--- Quote from: tekfan on December 31, 2011, 02:48:28 pm ---
And after
Now I just have to find a printer or something to rob it of its HP badge


--- End quote ---

Heh... thought of scanning my ol' HP corporate badge.  But that won't do, you need the old, classic HP badge!
amspire:
TekFan,

That HP IC with the blown transistor (HP part no  1821 0002) is a CA3045 transistor array. Costs about $5. Probably worth getting a proper replacement.

Richard.
Navigation
Message Index
Next page
Previous page
There was an error while thanking
Thanking...

Go to full version
Powered by SMFPacks Advanced Attachments Uploader Mod