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Old 8th June 2008, 10:00 AM   #1
diyAudio Member
Join Date: Jun 2008
Default Tagboard amps

Hi Guys
Im a newbie to this forum (and electronics in general ,so forgive my ignorance), and i was wondering: does anybody know much about how to assemble components on a tagboard. Im lead to believe there is some kinda special tool used. Also, is any soldering involved in the process (other than earthing) thanks for your posts in advance!
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Old 8th June 2008, 04:08 PM   #2
diyAudio Member
Join Date: Nov 2007
Location: Dallas
First, everything must be clean. NOS parts are often in
need of good cleaning, solder often does not stick well
to deeply tarnished metal.

Don't rely on solder alone for the mechanical connection.
Be sure to bend the lead in some way that binds securely.
This also frees your hand from holding the part, that you
might better control the iron and the solder.

Apply tacky rosin flux to the joint, don't rely on the solder
core to contain enough flux. Never use corrosive flux.

The iron should be slightly shiny wet (tinned) with solder.
I prefer a brass chore boy cleaning pad more than a wet
sponge for cleaning off any excess.....

Touch the tag and the component lead simultaneously.
When you estimate them to be hot, apply the solder to
the joint from the opposie side. The solder should flow
through the joint toward the hot iron.

If you get too much solder, you can draw it away with
solder wick. The trick to getting wick to work far better
than a "solder sucker" is apply a lot of flux to the wick

You can never have too much flux if its the right stuff.
It must not be corrosive, yet must still clean up easily
with only hot water and a toothbrush.

Clean wet parts should never be powered while wet.
Nor left wet any longer than necessary. Dry them with
a hair dryer, or put in a hot dry place no more than 70C.

Don't overcook electrolytic caps please, might be best
to install those last if opportunity permits....
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Old 8th June 2008, 06:00 PM   #3
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Join Date: Oct 2004
Location: Maui, Hawai'i, USA
What is it you mean by 'tagboard'?  The material I know as tagboard is a hard surfaced lightweight cardboard, that used to be employed in merchandising for price tags.

Got a picture?

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Old 9th June 2008, 01:18 PM   #4
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Join Date: Jun 2008
Ohh, sorry.For anyone who is curious, Tagboard is also reffered to as solderboard, turret board.........Basicly, its a board with holes punched in it for holding components in vintage amps. it was a predessesor to pcb boards.Ohh, Thanks for the advice!!!!!!
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Old 9th June 2008, 01:52 PM   #5
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Join Date: Jun 2008
ill post a pic now.............oh, tese have been called ptp boards.
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Old 10th June 2008, 08:08 AM   #6
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Join Date: Jun 2008
heres a pic of tagboard circutry (components attached)
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Old 10th June 2008, 08:50 AM   #7
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Join Date: Sep 2004

Originally posted by kenpeter
First, everything must be clean. NOS parts are often in
need of good cleaning, solder often does not stick well
to deeply tarnished metal.
Use of Kester "88" instead of "44" core solder can alleviate this worry

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Old 10th June 2008, 10:07 AM   #8
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Join Date: May 2007
Hi Ramalamafafafa, I notice you're from downunder, if you cannot source the Kester solder mentioned in a previous post, I can recomend Multicore solder with the #511 "Crystal" flux, tins everything very well at a moderate temp (370 deg cee, a #7 bit if you have a Weller iron with the magnetic thermostat). All the trade suppliers in NZ have it, so I doubt you'd have much trouble finding it in Oz.
Works well even with slightly tarnished items, and doesn't leave a lot of flux residue.
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Old 10th June 2008, 11:21 AM   #9
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Join Date: Jun 2008
Cheers for the advice so far guys, its real helpful!! Soooooo, a kiwi eh radiotron............whats the name of some of these suppliers you speak of. (i live in perth, its probably just as easy to source stuff from NZ as the eastern states of australia to where i live!!!) Thanks again everybody, this is settling some doubts i had about building a vintage amp!!!
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Old 11th June 2008, 09:11 AM   #10
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Join Date: May 2007
Hi, yeah, a kiwi (of sorts!), anyway here is somewhere to try for the #511 solder, I deal with these guys, they're OK: http://www.tradetech.co.nz/results.h...q=crystal+flux
And you could also search http://www.spectron.co.nz/000%20Public/index.html and go to "soldering technology -> Solder Wire - Leaded and have a look at range there.
See how you get on with those, Farnell have it too, they are in Oz, here is search result for them: http://nz.farnell.com/jsp/search/bro...equestid=36616
Just search "crystal flux" and you'll find it.
Good stuff, use it all the time for my own work, and in day job where rework with leaded solder is applicable. Cheers, 'tron.
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