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I finally received my replacement IC1001 for the PBT board of my TR-7. (Took about a month, must have come from Asia)
?
It's been a while since I've unsoldered/replaced a DIP IC like this. When I used to be a bench tech we'd use a combination of solder wick and solder suckers. Never easy to coax all 14 pins to release and it was pretty easy to damage something if you weren't patient.?
?
Is there a better way? Do better tools exist to simplify this task today? thx
--
Craig/W8CS
Greenville, SC
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If you don't need to save the IC on the board then use a set of fine diagonal cutters and snip off each leg close to the body of the IC. Then you can simply unsolder and remove each leg from the board using a solder sucker and/or wick. This procedure doesn't damage the board or traces.?
I prefer using a vacuum desoldering tool. You can remove the IC intact almost in less time than it takes to snip off the individual legs.
On Tue, Mar 25, 2025 at 8:13?AM Craig W8CS via <craig_severson= [email protected]> wrote: I finally received my replacement IC1001 for the PBT board of my TR-7. (Took about a month, must have come from Asia)
?
It's been a while since I've unsoldered/replaced a DIP IC like this. When I used to be a bench tech we'd use a combination of solder wick and solder suckers. Never easy to coax all 14 pins to release and it was pretty easy to damage something if you weren't patient.?
?
Is there a better way? Do better tools exist to simplify this task today? thx
--
Craig/W8CS
Greenville, SC
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Even better: clip the leads per above and use the magnetism and surface tension of the solder to simply lift each pin out. You can then flip the board over and desolder with your sucker or a desoldering tool (like a Hakko or similar powered vacuum).
I reworked thousands of boards in the late 70s using this method. I got good enough to be able to change an IC I¡¯m much less time than it took me to type this.?
73,
Steve Wedge, W1ES
Time flies like an arrow. Fruit flies like a banana.
On Tue, Mar 25, 2025 at 08:19, Ken, WA2LBI via groups.io < wa2lbi@...> wrote:
If you don't need to save the IC on the board then use a set of fine diagonal cutters and snip off each leg close to the body of the IC. Then you can simply unsolder and remove each leg from the board using a solder sucker and/or wick. This procedure doesn't damage the board or traces.?
I prefer using a vacuum desoldering tool. You can remove the IC intact almost in less time than it takes to snip off the individual legs.
On Tue, Mar 25, 2025 at 8:13?AM Craig W8CS via
<craig_severson=
[email protected]> wrote:
I finally received my replacement IC1001 for the PBT board of my TR-7. (Took about a month, must have come from Asia)
?
It's been a while since I've unsoldered/replaced a DIP IC like this. When I used to be a bench tech we'd use a combination of solder wick and solder suckers. Never easy to coax all 14 pins to release and it was pretty easy to damage something if you weren't patient.?
?
Is there a better way? Do better tools exist to simplify this task today? thx
--
Craig/W8CS
Greenville, SC
|
I don't know if they are still available, but there used to be DIP desoldering tips that were DIP sized to melt all the pins at the same time.
?
I found this picture that shows what I'm talking about:
?
?
?
Ken, N2VIP
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The hot air gun works ok.? YOu can cut the IC off and remove one pin a a time.? There are some soldering iron tips that are made to heat all the pins at one time.
Ralph ku4pt
On Tuesday, March 25, 2025 at 08:13:42 AM EDT, Craig W8CS via groups.io <craig_severson@...> wrote:
I finally received my replacement IC1001 for the PBT board of my TR-7. (Took about a month, must have come from Asia)
?
It's been a while since I've unsoldered/replaced a DIP IC like this. When I used to be a bench tech we'd use a combination of solder wick and solder suckers. Never easy to coax all 14 pins to release and it was pretty easy to damage something if you weren't patient.?
?
Is there a better way? Do better tools exist to simplify this task today? thx
--
Craig/W8CS
Greenville, SC
_._,_
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With small boards, I used to simply melt each hole, rotate my wrist and smack the top of the board on the table. That was fastest of all. It didn¡¯t work well with multilayer boards (which aren¡¯t present on any Drake boards).?
We all found our ways to speed up desoldering IC¡¯s as we were in production test.?
Steve Wedge, W1ES
Time flies like an arrow. Fruit flies like a banana.
On Tue, Mar 25, 2025 at 09:41, Ralph Mowery via groups.io < ku4pt@...> wrote:
The hot air gun works ok.? YOu can cut the IC off and remove one pin a a time.? There are some soldering iron tips that are made to heat all the pins at one time.
Ralph ku4pt
On Tuesday, March 25, 2025 at 08:13:42 AM EDT, Craig W8CS via groups.io <craig_severson@...> wrote:
I finally received my replacement IC1001 for the PBT board of my TR-7. (Took about a month, must have come from Asia)
?
It's been a while since I've unsoldered/replaced a DIP IC like this. When I used to be a bench tech we'd use a combination of solder wick and solder suckers. Never easy to coax all 14 pins to release and it was pretty easy to damage something if you weren't patient.?
?
Is there a better way? Do better tools exist to simplify this task today? thx
--
Craig/W8CS
Greenville, SC
_._,_
|
O It's been a while since I've unsoldered/replaced a DIP IC like this.
When I used to be a bench tech we'd use a combination of solder wick
and solder suckers. Never easy to coax all 14 pins to release and it
was pretty easy to damage something if you weren't patient. *** Check out "Mr Solderfix" on Youtube. Take a piece of 14 gauge copper wire. Bend it in the shape of a U so it can touch all the IC pins at once. Solder it to all the pins. Heat it up with a powerful soldering iron so it melts the solder of all the pins. The chip will just fall out, unless the pins were bent out to hold it while soldering, in which case you will have to tease it out. - Jerry, KF6VB Is there a better way? Do better tools exist to simplify this task
today? thx
--
Craig/W8CS
Greenville, SC
_._,_
Links:
------
[1] /g/DRAKE-RADIO/message/83870
[2] /mt/111895513/243852
[3] /g/DRAKE-RADIO/post
[4] /g/DRAKE-RADIO/editsub/243852
[5] /g/DRAKE-RADIO/leave/12260778/243852/767576506/xyzzy
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Funny...I have heard that works....but never tried it....BEST LUCK!
STAY SAFE AND STAY WELL!
?
Respectfully,
Thomas K. Lanieri, NU2W
NJ DOH Licensed EMT;?
PHTLS, AMLS, PHPEC
Millenium EMS
ARC N.E. BioMedical Services
ARC N.E. Disaster Cycle Services
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Show quoted text
-----Original Message----- From: [email protected] < [email protected]> On Behalf Of jerry-KF6VB Sent: Tuesday, March 25, 2025 10:37 AM To: [email protected]Subject: Re: [DRAKE-RADIO] DIP IC Removal? O
It's been a while since I've unsoldered/replaced a DIP IC like this.
When I used to be a bench tech we'd use a combination of solder wick
and solder suckers. Never easy to coax all 14 pins to release and it
was pretty easy to damage something if you weren't patient.
*** Check out "Mr Solderfix" on Youtube. Take a piece of 14 gauge copper wire. Bend it in the shape of a U so it can touch all the IC pins at once. Solder it to all the pins. Heat it up with a powerful soldering iron so it melts the solder of all the pins. The chip will just fall out, unless the pins were bent out to hold it while soldering, in which case you will have to tease it out. - Jerry, KF6VB
Is there a better way? Do better tools exist to simplify this task
today? thx
--
Craig/W8CS
Greenville, SC
_._,_
Links:
------
[1] /g/DRAKE-RADIO/message/83870
[2] /mt/111895513/243852
[3] /g/DRAKE-RADIO/post
[4] /g/DRAKE-RADIO/editsub/243852
[5]
/g/DRAKE-RADIO/leave/12260778/243852/767576506/xyzzy
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I bet that if you have one of the Weller type soldering guns you could take the tip out and form the wire to match the pins of the chip.
Ralph ku4pt
On Tuesday, March 25, 2025 at 10:39:56 AM EDT, NU2W via groups.io <oemeoc88@...> wrote:
Funny...I have heard that works....but never tried it....BEST LUCK!
STAY SAFE AND STAY WELL!
?
Respectfully,
Thomas K. Lanieri, NU2W
NJ DOH Licensed EMT;?
PHTLS, AMLS, PHPEC
Millenium EMS
ARC N.E. BioMedical Services
ARC N.E. Disaster Cycle Services
-----Original Message----- From: [email protected] < [email protected]> On Behalf Of jerry-KF6VB Sent: Tuesday, March 25, 2025 10:37 AM To: [email protected]Subject: Re: [DRAKE-RADIO] DIP IC Removal? O > > It's been a while since I've unsoldered/replaced a DIP IC like this. > When I used to be a bench tech we'd use a combination of solder wick > and solder suckers. Never easy to coax all 14 pins to release and it > was pretty easy to damage something if you weren't patient. *** Check out "Mr Solderfix" on Youtube. ? Take a piece of 14 gauge copper wire.? Bend it in the shape of a U so it can touch all the IC pins at once.? Solder it to all the pins. Heat it up with a powerful soldering iron so it melts the solder of all the pins. The chip will just fall out, unless the pins were bent out to hold it while soldering, in which case you will have to tease it out. ? ? ? ? ? ? ? ? ? ? - Jerry, KF6VB
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I have always thought that if I remove a chip, it¡¯s not worth putting it back unless it¡¯s a very expensive chip, so I clip the leads and pull the pins
out one at a time.? It¡¯s the fasted and least likely way to remove a chip without damaging the PCB.? I have used desoldering pumps and never had as good an experience as clipping and pilling the pins.? Half the time, the pins don¡¯t get cleared with pumps,
and the other half, they damage the trace.? I have 2 difference Wheller desoldering stations and haven¡¯t used either for years.
?
73, Clint, VE3CMQ
?
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Show quoted text
From: [email protected] <[email protected]>
On Behalf Of Ralph Mowery via groups.io
Sent: Tuesday, 25 March 2025 10:03
To: [email protected]
Subject: Re: [DRAKE-RADIO] DIP IC Removal?
?
I bet that if you have one of the Weller type soldering guns you could take the tip out and form the wire to match the pins of the chip.
On Tuesday, March 25, 2025 at 10:39:56 AM EDT, NU2W via groups.io <oemeoc88@...> wrote:
Funny...I have heard that works....but never tried it....BEST LUCK!
STAY SAFE AND STAY WELL!
?
Respectfully,
Thomas K. Lanieri, NU2W
NJ DOH Licensed EMT;?
PHTLS, AMLS, PHPEC
Millenium EMS
ARC N.E. BioMedical Services
ARC N.E. Disaster Cycle Services
-----Original Message-----
From: [email protected] <[email protected]> On Behalf Of jerry-KF6VB
Sent: Tuesday, March 25, 2025 10:37 AM
To: [email protected]
Subject: Re: [DRAKE-RADIO] DIP IC Removal?
O
>
> It's been a while since I've unsoldered/replaced a DIP IC like this.
> When I used to be a bench tech we'd use a combination of solder wick
> and solder suckers. Never easy to coax all 14 pins to release and it
> was pretty easy to damage something if you weren't patient.
*** Check out "Mr Solderfix" on Youtube.
? Take a piece of 14 gauge copper wire.? Bend it in the shape of a U so it
can touch all the IC pins at once.? Solder it to all the pins.
Heat it up with a powerful soldering iron so it melts the solder of all the
pins.
The chip will just fall out, unless the pins were bent out to hold it while
soldering, in which case you will have to tease it out.
? ? ? ? ? ? ? ? ? ? - Jerry, KF6VB
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Thanks everyone! Great feedback/advice that I had not considered. Should make this a lot easier now.?
--
Craig/W8CS
Greenville, SC
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Hakko FR-301 is a great tool for desoldering. A bit expensive up front, but over the years may pay off in ease of use and less damage.
?
Really stubborn parts I have occasionally had to resort to the desoldering gun plus using hot air to remove an IC with the most care to not damage the board. As others have mentioned, sacrificing the part (cutting the legs off the IC) is always an option too, but sometimes you like to keep the IC, particularly if you're not sure it's the cause of the fault.
?
Scott, KK7CAI
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On 2025-03-25 12:46, Scott Baker via groups.io wrote: Hakko FR-301 is a great tool for desoldering. A bit expensive up
front, but over the years may pay off in ease of use and less damage.
*** The FR-301 can be had cheaply brand new on Ebay for the Japanese version. This is made to work off 100VAC, but it works just fine off 125. I have one. Somebody took one apart and found that the ONLY difference between the Japanese home version and the export version was a resistor - 300 ohms, 1W - in series with the motor. - Jerry, KF6VB Really stubborn parts I have occasionally had to resort to the
desoldering gun plus using hot air to remove an IC with the most care
to not damage the board. As others have mentioned, sacrificing the
part (cutting the legs off the IC) is always an option too, but
sometimes you like to keep the IC, particularly if you're not sure
it's the cause of the fault.
Scott, KK7CAI
Links:
------
[1] /g/DRAKE-RADIO/message/83880
[2] /mt/111895513/243852
[3] /g/DRAKE-RADIO/post
[4] /g/DRAKE-RADIO/editsub/243852
[5] /g/DRAKE-RADIO/leave/12260778/243852/767576506/xyzzy
|
Thee is a certain skill set required for vacuum desolder pump stations. In my experience most of the people who have trouble using them did not RTFM to learn how to do it properly or failed to keep the air path clean and/or the tip in good shape. I have used various Pace and Hakko pumps over decades and rarely damage a trace. Having written that, if I am only pulling one chip I fall back to the classic Soldapullit style pump with good results. There is a specific technique for those as well. On Tue, 25 Mar 2025 18:02:45 +0000 "Clint VE3CMQ via groups.io" <ve6cmm@...> wrote: I have used desoldering pumps and never had as good an experience as clipping and pilling the pins. Half the time, the pins don¡¯t get cleared with pumps, and the other half, they damage the trace. -- 73 -Jim NU0C
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Craig W8CS
NU2W
Jim Shorney