Point to point wiring

Richard Ellis · 20th November 2020, 01:18 AM

So your saying you want to build your new unit with "classic" point to point wiring, be careful what you wish for....
Harmon Kardon TA-7000A receiver...

-----------------------------------------------------------------------------Rick....

wiseoldtech · 20th November 2020, 01:53 AM

Looks like the bottom of the tuner/preamp section of my 1963 RCA Victor console stereo...

Before The Recapping..

v4lve lover · 20th November 2020, 02:28 AM

If you have some of the salvaged tektronix ceramic strips you can make something way neater.

6A3sUMMER · 20th November 2020, 04:06 AM

You have to use silver solder, or it will destroy them.

One time soldering may be OK.
But if you need to replace a part, or make a modification . . .

They did not work well for that in my situations.

OldHector · 20th November 2020, 10:32 AM

Quote:

Originally Posted by v4lve lover

If you have some of the salvaged tektronix ceramic strips you can make something way neater.

Hi V4lve lover,

Out of interest, I do have those, but they are glued to plastic supports that require a specific size hole in the chassis to be a tight fit. How do you fit yours?

Cheers, Richard

OldHector · 20th November 2020, 10:44 AM

Quote:

Originally Posted by 6A3sUMMER

You have to use silver solder, or it will destroy them.

Suposedly the old Tektronik gear shipped with a small reel of solder, just for that reason. Some quite interesting history here:

Tektronix ceramic-strips

Special silver-bearing solder is used to solder wires and components directly to the notches in ceramic strips and has a composition of 60% tin, 37% lead, 3% silver. This silver-bearing solder should be used when soldering or repairing ceramic strips which prevents the silver bonded to the ceramic from dissolving in the molten solder. Failure to use the correct silver-bearing solder on Tektronix ceramic strips can result in failure of the silver to ceramic bond.

Many of the modern lead-free solders contain around 3-4% silver, so presumably the leeching of the solder from the ceramic should no longer be a problem?

Schmitz77 · 04:30 PM

Well, there's point to point wiring and point to point wiring...It has nothing to do with the method itself, but with the execution.
Btw, forget those TEK ceramic strips. They weren't made for twist and solder joints. And thats the problem, soundwise.
But it could be kind of an art, though.

kodabmx · 20th November 2020, 04:29 PM

My take on point to point.

Schmitz77 · 20th November 2020, 04:33 PM

My take on this subject. Full function stereo pre.

cbueche · 20th November 2020, 04:56 PM

This is why i buy german cars

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20th November 2020, 02:28 AM	#3
v4lve lover diyAudio Member Join Date: Aug 2010 Location: Surrounded by glass, no really my room is full of tubes	If you have some of the salvaged tektronix ceramic strips you can make something way neater.

20th November 2020, 04:06 AM	#4
6A3sUMMER diyAudio Member Join Date: Jun 2016	You have to use silver solder, or it will destroy them. One time soldering may be OK. But if you need to replace a part, or make a modification . . . They did not work well for that in my situations.

20th November 2020, 04:56 PM	#10
cbueche diyAudio Member Join Date: Jun 2016 Location: Lake of Biel, Switzerland	This is why i buy german cars