[GreenKeys] GreenKeys Digest, Vol 108, Issue 38

[Don Robert House]

Most of the boards with the traces coming of are phenolic which is why  
I had suggested Pliobond.
However the last years of production were with modern circuit board  
material.

The old ones are brown the new ones are green.

Don
K9TTY

On 14 Jan 2013, at 12:18 AM, John Nagle wrote:

On 1/13/2013 9:35 PM, greenkeys-request at mailman.qth.net wrote:
> What can I do to reattach the detached track to the board?\

See

http://www.antiqueradios.com/forums/viewtopic.php?t=161606

for how the antique radio repair guys repair old PC boards.

Here's a PC board repair kit for $20.  Surplus.

http://shop.vetcosurplus.com/catalog/product_info.php?products_id=945&gclid=CImIk7aY57QCFYF7Qgod_2YAcw

Using cyanoacrylate cements (super glue) to glue traces is marginal -
it will burn if you solder in the area.  Epoxies that can withstand
soldering temperature are better.

What are the boards in an ASR33 made of?  They're probably
old phenolic boards, predating FR4.

				John Nagle


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