Vintage Stock

[TonyS]

In my effort to clean up my garage I am agonising over whether to dump
or not to dump
I have a batch of never used boards that contain DIL 14 CMOS TC74C04P
(quad 2 input hex NAND) soldered in double sided FR4 pcbs, in batches of
70x12 panel boards (840 chips). The chips have been produced in 1985 and
I have no reason to believe that they are defective. With the right
equipment they could be de-soldered easily.

If you can make use of them you can collect them for free, or I can
arrange shipping at your expense. I am in Scarborough, Perth.

Cheers

Tony

 

[TonyS]

On 4/08/2011 8:02 AM, TonyS wrote:

In my effort to clean up my garage I am agonising over whether to dump
or not to dump
I have a batch of never used boards that contain DIL 14 CMOS TC74C04P
(quad 2 input hex NAND) soldered in double sided FR4 pcbs, in batches of
70x12 panel boards (840 chips). The chips have been produced in 1985 and
I have no reason to believe that they are defective. With the right
equipment they could be de-soldered easily.

If you can make use of them you can collect them for free, or I can
arrange shipping at your expense. I am in Scarborough, Perth.

Cheers

Tony

An email might help:

tselectronics AT iinet.net.au

 

[Tom]

On 4/08/2011 10:02 AM, TonyS wrote:

In my effort to clean up my garage I am agonising over whether to dump or not to dump
I have a batch of never used boards that contain DIL 14 CMOS TC74C04P (quad 2 input hex NAND) soldered in double sided FR4 pcbs, in batches of 70x12 panel boards (840 chips). The chips have been produced in 1985 and I have no reason to believe that they are defective. With the right equipment they could be de-soldered easily.

If you can make use of them you can collect them for free, or I can arrange shipping at your expense. I am in Scarborough, Perth.

Cheers

Tony

Hi Tony,

I have some experience with giving stuff away for free. People take it as it seems a bargain at the time, then they decide they don't really need it and they dump it because it did not cost them a cent. This is exactly what you wanted to avoid and you put some effort into advertising the goods, then they are too lazy to do the same. It is incredible how the fact that someone have paid money changes the whole scheme of things, even if its a dollar or two.

Put it on Ebay for 99 cents, at least that way you'll have reasonable chance your stuff won't end up in landfill because of someones laziness.

Tom

 

[TonyS]

On 4/08/2011 5:48 PM, Tom wrote:

On 4/08/2011 10:02 AM, TonyS wrote:
In my effort to clean up my garage I am agonising over whether to dump
or not to dump
I have a batch of never used boards that contain DIL 14 CMOS TC74C04P
(quad 2 input hex NAND) soldered in double sided FR4 pcbs, in batches
of 70x12 panel boards (840 chips). The chips have been produced in
1985 and I have no reason to believe that they are defective. With the
right equipment they could be de-soldered easily.

If you can make use of them you can collect them for free, or I can
arrange shipping at your expense. I am in Scarborough, Perth.

Cheers

Tony

Hi Tony,

I have some experience with giving stuff away for free. People take it
as it seems a bargain at the time, then they decide they don't really
need it and they dump it because it did not cost them a cent. This is
exactly what you wanted to avoid and you put some effort into
advertising the goods, then they are too lazy to do the same. It is
incredible how the fact that someone have paid money changes the whole
scheme of things, even if its a dollar or two.

Put it on Ebay for 99 cents, at least that way you'll have reasonable
chance your stuff won't end up in landfill because of someones laziness.

Tom

Thanks Tom,
good idea

Tony

 

[Ian Field]

"TonyS" <nospam@mymail.com> wrote in message
newscudncZZav0FfKTTnZ2dnUVZ_tqdnZ2d@westnet.com.au...

In my effort to clean up my garage I am agonising over whether to dump or
not to dump
I have a batch of never used boards that contain DIL 14 CMOS TC74C04P
(quad 2 input hex NAND) soldered in double sided FR4 pcbs, in batches of
70x12 panel boards (840 chips). The chips have been produced in 1985 and I
have no reason to believe that they are defective. With the right
equipment they could be de-soldered easily.

DIL chips are easily liberated from double sided boards with a blowlamp and
a suitable IC extraction tool.

Not a regular workman's blowlamp (unless working outdoors), but a hobbyist's
"pencil blowlamp" - often sold with a catalytic solder tip accesory.

With very little practice you can have the chips out with less heating than
if you used a "big bertha" solder tip. But the PCB fibreglass doesn't fare
so well!

When I first started salvaging ICs this way I didn't have a proper IC
pulling tool, so used bull-nose pliers, every once in a while the chip I was
pulling came apart, I described this to another engineer who commented that
I was simply weeding out the defective packages and wasn't losing as much as
I thought.

After a while I made an IC puller by bending hooks on the end of steel
tweezers - a few weeks later, what used to be Practical Television presented
a manufactured IC puller as the front cover freebie.

 

[Mickle]

On 4/08/2011 7:48 PM, Tom wrote:

I have some experience with giving stuff away for free. People take it
as it seems a bargain at the time, then they decide they don't really
need it and they dump it because it did not cost them a cent. This is
exactly what you wanted to avoid and you put some effort into
advertising the goods, then they are too lazy to do the same. It is
incredible how the fact that someone have paid money changes the whole
scheme of things, even if its a dollar or two.

Put it on Ebay for 99 cents, at least that way you'll have reasonable
chance your stuff won't end up in landfill because of someones laziness.

I used the free oscilloscope I got from here for years. I did eventually
send it to the scrap metal yard when it stopped working but I did get
many years of service from it.

Tom

 

[Dennis]

On 5/08/2011 5:20 AM, Ian Field wrote:

"TonyS"<nospam@mymail.com> wrote in message
newscudncZZav0FfKTTnZ2dnUVZ_tqdnZ2d@westnet.com.au...
In my effort to clean up my garage I am agonising over whether to dump or
not to dump
I have a batch of never used boards that contain DIL 14 CMOS TC74C04P
(quad 2 input hex NAND) soldered in double sided FR4 pcbs, in batches of
70x12 panel boards (840 chips). The chips have been produced in 1985 and I
have no reason to believe that they are defective. With the right
equipment they could be de-soldered easily.


DIL chips are easily liberated from double sided boards with a blowlamp and
a suitable IC extraction tool.

Not a regular workman's blowlamp (unless working outdoors), but a hobbyist's
"pencil blowlamp" - often sold with a catalytic solder tip accesory.

With very little practice you can have the chips out with less heating than
if you used a "big bertha" solder tip. But the PCB fibreglass doesn't fare
so well!

When I first started salvaging ICs this way I didn't have a proper IC
pulling tool, so used bull-nose pliers, every once in a while the chip I was
pulling came apart, I described this to another engineer who commented that
I was simply weeding out the defective packages and wasn't losing as much as
I thought.

After a while I made an IC puller by bending hooks on the end of steel
tweezers - a few weeks later, what used to be Practical Television presented
a manufactured IC puller as the front cover freebie.

A tip I read somewhere in the last months or so was to use a set of
feeler gauges for flicking ic off boards. Particularly for SMD SO packages.

 

[Clifford Heath]

On 08/05/11 13:12, Dennis wrote:

On 5/08/2011 5:20 AM, Ian Field wrote:
DIL chips are easily liberated from double sided boards with a
blowlamp and a suitable IC extraction tool.
A tip I read somewhere in the last months or so was to use a set of
feeler gauges for flicking ic off boards. Particularly for SMD SO packages.

In the past I've bulk-depopulated boards using a bar radiator, mounted in the
garage vice with the radiator pointing up. Sit the board so a row of ICs are
along the bar, and when they melt, pull them all rapidly, then heat the next
row. You have to work quickly to extract a whole row (especially on the 16
layer boards I had), and a few chips get broken, but most survive. This was
mostly TTL, and all the chips I've used had survived just fine.

Clifford Heath.

 

[Ian Field]

"Dennis" <user@example.net> wrote in message
news:mYqdnWj5I8QXwqbTnZ2dnUVZ_uSdnZ2d@westnet.com.au...

On 5/08/2011 5:20 AM, Ian Field wrote:
"TonyS"<nospam@mymail.com> wrote in message
newscudncZZav0FfKTTnZ2dnUVZ_tqdnZ2d@westnet.com.au...
In my effort to clean up my garage I am agonising over whether to dump
or
not to dump
I have a batch of never used boards that contain DIL 14 CMOS TC74C04P
(quad 2 input hex NAND) soldered in double sided FR4 pcbs, in batches of
70x12 panel boards (840 chips). The chips have been produced in 1985 and
I
have no reason to believe that they are defective. With the right
equipment they could be de-soldered easily.


DIL chips are easily liberated from double sided boards with a blowlamp
and
a suitable IC extraction tool.

Not a regular workman's blowlamp (unless working outdoors), but a
hobbyist's
"pencil blowlamp" - often sold with a catalytic solder tip accesory.

With very little practice you can have the chips out with less heating
than
if you used a "big bertha" solder tip. But the PCB fibreglass doesn't
fare
so well!

When I first started salvaging ICs this way I didn't have a proper IC
pulling tool, so used bull-nose pliers, every once in a while the chip I
was
pulling came apart, I described this to another engineer who commented
that
I was simply weeding out the defective packages and wasn't losing as much
as
I thought.

After a while I made an IC puller by bending hooks on the end of steel
tweezers - a few weeks later, what used to be Practical Television
presented
a manufactured IC puller as the front cover freebie.




A tip I read somewhere in the last months or so was to use a set of feeler
gauges for flicking ic off boards. Particularly for SMD SO packages.

One trick is to heat the bare side of the board with an electric heat gun
(super hot industrial hair dryer type thing) and simply sweep all the SMD
components off with a small paint brush.

Many years ago I experimented with a butane powered portable heater and an
old fridge compressor, coiled up some of the copper pipe and wedged it
between the guard & burner, brazed a carburettor jet in the end of the pipe
and used the very hot blast of heated air to literally blow the SMDs off a
pile of scrap boards.