It is currently Mon Mar 16, 2020 8:27 pm

All times are UTC - 7 hours



Post new topic Reply to topic  [ 28 posts ]  Go to page Previous  1, 2
Go to page Previous  1, 2
Author Message
Post subject: Re: Did any Vintage amps have PC boards?
Posted: Wed Jun 27, 2012 7:00 pm
Offline
Aspiring Musician
Aspiring Musician
User avatar

Joined: Sat Mar 31, 2012 6:38 am
Posts: 593
Beemer, I would love to have seen and heard that Ampeg. I bet it was Shaweet!

_________________
...I for one, sure would appreciate the return of intelligent conversation, spirit of assistance and the simple yet effective ignoring of those who can't seem to hang with that...
Best regards,
rob


Top
Profile
Fender Play Winter Sale 2020
Post subject: Re: Did any Vintage amps have PC boards?
Posted: Wed Jun 27, 2012 7:45 pm
Offline
Rock Star
Rock Star

Joined: Mon Apr 05, 2010 2:37 pm
Posts: 8708
Location: Natural Bridge, Virginia
Arc-n-spark wrote:
So now that we have the question answered definitively have any of you fellas done any soldering on these boards and if you did what was your experience with them? The one pictured looks beefy enough to be reworked easily enough (thanks RJ) but looks can be deceiving. I read somewhere (I think it was in the Fender forums) of guys having a rough time reworking boards. My guess is simply inexperience with soldering, using a soldering gun on PC boards, not using heat sinks on components when soldering, etc. Of course PC boards can also be of poor quality which can make rework frustrating. I wanna know things like this before I get deeper into amps. I have a Peavey Renown 400 that's close to vintage. It's a 212 watt loud MOFO which I have done minor repairs to. The boards in it seem a little... eh... anemic. Anyway...

And since I have your attention fellas, if a tube is microphonic is it useless?

Thanks for your replies


No experience working on those amps, but I learned to solder on PC boards in the early/mid 70s working for a small electronics company while on summer break from college. The circuit boards were for commercial radio station applications and were just as heavy duty as the ones in that SS Fender amp. They were very easy to work on and repair. It looks to me like that board in Arjay's photo was hand soldered as opposed to wave/machine soldered.

_________________
Bill

Image


Top
Profile
Post subject: Re: Did any Vintage amps have PC boards?
Posted: Wed Jun 27, 2012 7:47 pm
Offline
Rock Star
Rock Star

Joined: Mon Apr 05, 2010 2:37 pm
Posts: 8708
Location: Natural Bridge, Virginia
Retroverbial wrote:
PM received, Bill.

The "gentleman" under discussion has quite the track record of unwarranted kibbutzing, no?

:lol:

He pulled the same mierda there as he did on the TDPRI group which got him unceremoniously booted from both forums.

Arjay


Interesting.

_________________
Bill

Image


Top
Profile
Post subject: Re: Did any Vintage amps have PC boards?
Posted: Wed Jun 27, 2012 7:51 pm
Offline
Rock Star
Rock Star
User avatar

Joined: Sun Dec 21, 2008 8:29 am
Posts: 4238
Location: Pgh Pa
That was the question I have on this subject. What kind of soldering equipment would you use for soldering PC boards. I do solder a fair amount in what I do but on a much larger scale. Most of what I use is torches or induction machines.


Top
Profile
Post subject: Re: Did any Vintage amps have PC boards?
Posted: Wed Jun 27, 2012 8:00 pm
Offline
Rock Star
Rock Star

Joined: Mon Apr 05, 2010 2:37 pm
Posts: 8708
Location: Natural Bridge, Virginia
tbazzone wrote:
That was the question I have on this subject. What kind of soldering equipment would you use for soldering PC boards. I do solder a fair amount in what I do but on a much larger scale. Most of what I use is torches or induction machines.


Same as I use for my guitars and tube amps: a 25 watt Weller for general soldering and a 40 watt Weller iron for heavier stuff like ground wires and stuff like that. I don't think you'll need your torch. :lol: :lol: :lol:

_________________
Bill

Image


Top
Profile
Post subject: Re: Did any Vintage amps have PC boards?
Posted: Wed Jun 27, 2012 8:09 pm
Offline
Rock Star
Rock Star
User avatar

Joined: Sun Dec 21, 2008 8:29 am
Posts: 4238
Location: Pgh Pa
Im dangerious with that torch. Do you use a special tip?


Top
Profile
Post subject: Re: Did any Vintage amps have PC boards?
Posted: Wed Jun 27, 2012 9:24 pm
Offline
Rock Star
Rock Star

Joined: Mon Apr 05, 2010 2:37 pm
Posts: 8708
Location: Natural Bridge, Virginia
tbazzone wrote:
Im dangerious with that torch. Do you use a special tip?


25 watt iron with cone tip:

http://www.acehardware.com/product/inde ... Id=1340443

http://www.acehardware.com/product/inde ... Id=1289814

40 watt iron with large and small chisel tips:

http://www.acehardware.com/product/inde ... Id=1340446

http://www.acehardware.com/product/inde ... Id=1289812

_________________
Bill

Image


Top
Profile
Post subject: Re: Did any Vintage amps have PC boards?
Posted: Wed Jun 27, 2012 9:56 pm
Offline
Rock Star
Rock Star
User avatar

Joined: Sat Jul 03, 2010 2:18 pm
Posts: 6544
I've used Hakko 800-900 series soldering stations and desoldering suckers for years on PCB boards. It's best to remove the boards off the chassis, if extensive work is neccesary. And remove & replace soldered components from the tracing side. This allows you to keep the heat on the board to the least amount of time possible.

From working on super $$$ hi-fi gear (like Audio Research amps) & soldering solid-state parts onto boards... it pays to use a heat sink on the components. And good solder. I fashion a simple small alligator clip to place onto heat sensitive parts, during the soldering. And use Kester or Cardas lead/tin solder. You really need to clean the board very well & use new rosin paste to dress each point prior to soldering. Then, remove the excess after you are finished.

Sloppy work on PCB boards can lead to failures down the road. Failures which can be very hard to trace. So extra care is needed, versus turret boards or tagboards. But, can be carried over to P2P work---as good, clean work never hurts.

http://ecx.images-amazon.com/images/I/8 ... A1500_.jpg


Top
Profile
Post subject: Re: Did any Vintage amps have PC boards?
Posted: Thu Jun 28, 2012 4:22 am
Offline
Aspiring Musician
Aspiring Musician
User avatar

Joined: Sat Mar 31, 2012 6:38 am
Posts: 593
bluesky636 wrote:
Arc-n-spark wrote:
So now that we have the question answered definitively have any of you fellas done any soldering on these boards and if you did what was your experience with them? The one pictured looks beefy enough to be reworked easily enough (thanks RJ) but looks can be deceiving. I read somewhere (I think it was in the Fender forums) of guys having a rough time reworking boards. My guess is simply inexperience with soldering, using a soldering gun on PC boards, not using heat sinks on components when soldering, etc. Of course PC boards can also be of poor quality which can make rework frustrating. I wanna know things like this before I get deeper into amps. I have a Peavey Renown 400 that's close to vintage. It's a 212 watt loud MOFO which I have done minor repairs to. The boards in it seem a little... eh... anemic. Anyway...

And since I have your attention fellas, if a tube is microphonic is it useless?

Thanks for your replies


No experience working on those amps, but I learned to solder on PC boards in the early/mid 70s working for a small electronics company while on summer break from college. The circuit boards were for commercial radio station applications and were just as heavy duty as the ones in that SS Fender amp. They were very easy to work on and repair. It looks to me like that board in Arjay's photo was hand soldered as opposed to wave/machine soldered.


I'm sure it must be hand soldered as well. The flux left all over the place is a dead giveaway. I wonder if that board is single sided and tan on the other side with no eyelets. Lead dress looks typical of the times with the leads bent along the traces rather than mostly straight through with a slight bend typical of later board manufacturing.

_________________
...I for one, sure would appreciate the return of intelligent conversation, spirit of assistance and the simple yet effective ignoring of those who can't seem to hang with that...
Best regards,
rob


Top
Profile
Post subject: Re: Did any Vintage amps have PC boards?
Posted: Thu Jun 28, 2012 4:34 am
Offline
Aspiring Musician
Aspiring Musician
User avatar

Joined: Sat Mar 31, 2012 6:38 am
Posts: 593
BMW2002Ti wrote:
I've used Hakko 800-900 series soldering stations and desoldering suckers for years on PCB boards. It's best to remove the boards off the chassis, if extensive work is neccesary. And remove & replace soldered components from the tracing side. This allows you to keep the heat on the board to the least amount of time possible.

From working on super $$$ hi-fi gear (like Audio Research amps) & soldering solid-state parts onto boards... it pays to use a heat sink on the components. And good solder. I fashion a simple small alligator clip to place onto heat sensitive parts, during the soldering. And use Kester or Cardas lead/tin solder. You really need to clean the board very well & use new rosin paste to dress each point prior to soldering. Then, remove the excess after you are finished.

Sloppy work on PCB boards can lead to failures down the road. Failures which can be very hard to trace. So extra care is needed, versus turret boards or tagboards. But, can be carried over to P2P work---as good, clean work never hurts.

http://ecx.images-amazon.com/images/I/8 ... A1500_.jpg


I wish I had my Metcal soldering station and my Pace solder sucker I use at work next to me here at home. I have an assortment of tips for working on everything from BNC ground tabs to resistors and caps that are so small I need fine pointed tweezers to handle the parts and a microscope to really see what I'm doing. I have to say that working on the DSR with a soldering gun is fun compared to what I normally do.

_________________
...I for one, sure would appreciate the return of intelligent conversation, spirit of assistance and the simple yet effective ignoring of those who can't seem to hang with that...
Best regards,
rob


Top
Profile
Post subject: Re: Did any Vintage amps have PC boards?
Posted: Thu Jun 28, 2012 10:01 am
Offline
Professional Musician
Professional Musician
User avatar

Joined: Sun Feb 15, 2009 3:52 pm
Posts: 2005
Yup, the earlier boards were a "hit or miss" experience depending on manufacturer.
I base this on the many TV's I used to work on while working in a repair shop back in the 70's. I had a few instances of rebuilding the etch with solid strand wire. Not because the iron was too hot either.

_________________
-T

"You can't spend what you ain't got, you can't lose what you ain't never had" ~ McKinley Morganfield


Top
Profile
Post subject: Re: Did any Vintage amps have PC boards?
Posted: Thu Jun 28, 2012 12:07 pm
Offline
Aspiring Musician
Aspiring Musician
User avatar

Joined: Sat Mar 31, 2012 6:38 am
Posts: 593
Heh heh... I took solid strand wire and flattened it with flat faced pliers to make new traces oh so long ago. I also epoxied them down to the board. Gawd it seems like ages ago.

_________________
...I for one, sure would appreciate the return of intelligent conversation, spirit of assistance and the simple yet effective ignoring of those who can't seem to hang with that...
Best regards,
rob


Top
Profile
Post subject: Re: Did any Vintage amps have PC boards?
Posted: Thu Jun 28, 2012 4:28 pm
Offline
Professional Musician
Professional Musician
User avatar

Joined: Sun Feb 15, 2009 3:52 pm
Posts: 2005
Arc-n-spark wrote:
Heh heh... I took solid strand wire and flattened it with flat faced pliers to make new traces oh so long ago. I also epoxied them down to the board. Gawd it seems like ages ago.


It was!!! :lol:
And I don't have the hair to prove it! :lol: :lol:

_________________
-T

"You can't spend what you ain't got, you can't lose what you ain't never had" ~ McKinley Morganfield


Top
Profile
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 28 posts ]  Go to page Previous  1, 2
Go to page Previous  1, 2

All times are UTC - 7 hours

Fender Play Winter Sale 2020

Who is online

Users browsing this forum: No registered users and 2 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum

Search for:
Jump to: