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#451032 - 01/14/18 03:36 AM [Help! Tech S.O.S (Off topic)] Re: Amp power: 2 prong to 3 prong [Re: VideoTrack]
Teunis Offline
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Registered: 12/20/16
Posts: 147
Loc: Gold Coast, Queensland, Austra...
I see a lot of advice to take it to a pro which is certainly advice I would heed. Steve wrote about an incident where two guys on stage touched guitars and sparks flew. This tells me it is important that all the gear goes back to one common point. This is particularly true of earth or ground points. Some usually older buildings may have electrical circuits going back to different earths this can create issues such as earth loops, tingling and/or sparks and also increased buzz or we would say 50 cycle hum. For you 60 cycle hum.

Just a thought

Tony
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#451180 - 01/14/18 06:23 PM [Help! Tech S.O.S (Off topic)] Re: Amp power: 2 prong to 3 prong [Re: Teunis]
flatfoot Offline
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Registered: 06/15/00
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Loc: Sacramento CA

~Wow!~

Thanks for all these great replies!

A few days ago, I remembered that I have a local friend who is my age, plus. I found out he made a living working on tube circuits before moving on to computers in the 80s. He says the thing to do is test and replace all the capacitors. Upgrading to 3-prong is a no-brainer when doing a caps job.

It will be fun, since he will talk to me while he works. I am sure to learn some important stuff.

Thanks for all your help.
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#451286 - 01/15/18 10:42 AM [Help! Tech S.O.S (Off topic)] Re: Amp power: 2 prong to 3 prong [Re: flatfoot]
Guitarhacker Offline
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#451434 - 01/16/18 02:37 AM [Help! Tech S.O.S (Off topic)] Re: Amp power: 2 prong to 3 prong [Re: flatfoot]
VideoTrack Online   content
Veteran

Registered: 06/05/12
Posts: 7747
Loc: Melbourne, Australia
Quote:
He says the thing to do is test and replace all the capacitors.

Yes, that nailed it. Let him replace the required capacitors. Their values drift with age, more than any other components.

Your mate will do you a big favor to get that amp humming again. Oh my, what did I just say? crazy
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#452304 - 01/19/18 07:29 PM [Help! Tech S.O.S (Off topic)] Re: Amp power: 2 prong to 3 prong [Re: Teunis]
Larry Kehl Offline
Veteran

Registered: 06/04/00
Posts: 2020
Loc: New Mexico
Not to beat this horse to death ("the horse is never so dead it can't be beat some more") since you are taking it to a pro but consider this a "Oh by the way:"

Here is another Gibson amp and note this vid was posted AFTER we discussed what to do with a “death cap”

https://www.youtube.com/watch?v=TeWF6nHSH08

Go to about 8:37 and he talks about changing it to a three prong and the “death cap” – he doesn’t SAY he will remove the cap BUT you can see it there BEFORE he mods and it’s GONE after he mods.

You can plainly see it in circuit on the left (big black one) connected to ground next to transformer (go to around 8:57) and goes to power switch and by time 10:23 it has been REMOVED completely.

Larry

PS I had a Gibson GA-5 (I was first original owner, along with a original first owner of a ES-125) the model that preceded the Crestlines. They were physically smaller and covered in an almost white tolex I TRULY MISS that thing.




Edited by Larry Kehl (01/19/18 07:32 PM)
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#452307 - 01/19/18 07:43 PM [Help! Tech S.O.S (Off topic)] Re: Amp power: 2 prong to 3 prong [Re: flatfoot]
eddie1261 Offline
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Registered: 04/08/11
Posts: 4035
Loc: Cleveland, Ohio
Would they produce and amp that wasn't safe for you as it is?
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#452351 - 01/20/18 03:59 AM [Help! Tech S.O.S (Off topic)] Re: Amp power: 2 prong to 3 prong [Re: flatfoot]
duncanwhyte Offline
Enthusiast

Registered: 11/19/17
Posts: 20
Loc: uk
More study and its a basic early line filter. Intended to clean up the power supply. Something which now is done at the point of generation, but back then wasn't detected until sound equipment came into being.

Perhaps you might remember some amps which gave out a radio signal? Because they picked it up in their circuitry. Such things are rare as rocking horse doodoo now.

Its unlikely now to find a noisy line in the grid. But quite possible in something like a generator if the line filter on that is poor or faulty.
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#452356 - 01/20/18 04:33 AM [Help! Tech S.O.S (Off topic)] Re: Amp power: 2 prong to 3 prong [Re: duncanwhyte]
BlueAttitude Offline
Expert

Registered: 11/30/07
Posts: 1099
Loc: Ontario, Canada
Originally Posted By: duncanwhyte
More study and its a basic early line filter. Intended to clean up the power supply. Something which now is done at the point of generation, but back then wasn't detected until sound equipment came into being.



I agree, no longer needed and you will never see it in a modern tube amplifier.
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#452480 - 01/20/18 02:45 PM [Help! Tech S.O.S (Off topic)] Re: Amp power: 2 prong to 3 prong [Re: eddie1261]
Larry Kehl Offline
Veteran

Registered: 06/04/00
Posts: 2020
Loc: New Mexico
Eddie

No reputable designer or company would do it KNOWINGLY but yes they did unwittingly make unsafe amps. And it was almost EVERY amp manufacturer of that era especially when based on 40'5 & 50's designs and before the general use of the "hot, neutral, and grounded" power cord (aka the 3 prong) - with a properly grounded amp folks no longer had to "lift ground" to reduce/eliminate 60 (50) cycle hum .

These early design's were simply done "in a vacuum,", that is they never considered a cascade of failures:

1) a shorted CAP and

2) touching STRINGS, while

3) TOUCHING an ACTUAL ground source or touching a "grounded" Mic or other guitar player whose OWN ground source was at a completely different electrical potential

But these designs were not done with malice and the designers were not not lazy or stupid.

Even today a clean and great sounding amp can probably trace their actual design (maybe even the entirety of it, except for some of the power supply) directly back to these OLDER designs, with very little if ANY modification to signal flow path, power supply rectification, or components.

Larry


Edited by Larry Kehl (01/20/18 02:46 PM)

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#457367 - 02/13/18 11:57 AM [Help! Tech S.O.S (Off topic)] Re: Amp power: 2 prong to 3 prong [Re: flatfoot]
Larry Kehl Offline
Veteran

Registered: 06/04/00
Posts: 2020
Loc: New Mexico
how did your mod go?

and while here

This is just an UPDATE (and more "dead horse beating") with a video on HOW to do it (while this is a Fender not Gibson it has similar design with a death cap and ground/polarity switch)

https://www.youtube.com/watch?v=3cX-DwRWIMU

(on this first vid he leaves death cap in and polarity switch in but entire thing has been electrically removed from circuit - he does it for 1) external cosmetics - no gaping hole where switch was and 2) if some idiot wants to revert to original DANGEROUS condition)

and to add emphasis on how to

https://www.youtube.com/watch?v=LEyScfv1Mgc&t=141s

Larry


Edited by Larry Kehl (02/13/18 12:06 PM)
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Moderator:  Andrew - PG Music, PeterGannon 
PG Music News
Beginners Help - Muting the Melody Notation

Visit our Beginners Forum, and you'll notice our amazing Forum Community helping out new program users!

Like this recent post regarding Muting the Melody Notation: http://www.pgmusic.com/forums/ubbthreads.php?ubb=showflat&Number=458716 - Forum user Matt Finley did a great job of answering the new program user!

Our Beginners Forum really is a great resource for new program users!

Q: When I have entered chords and notation for a song, is it possible to mute the notation and just have the chords playing? This would be helpful for when I just want the chord backing track but want to read the notation.

A: There are several ways to do this. The easiest is probably to use the Mixer window and change the volume slider to zero for the Melody track. Or, hit the Mute icon on the Mixer for the Melody Track.

Another way, with more control rather than all or nothing, is to press F5 at the measure where you want to mute, and select mute or change the volume to zero. Later, press F5 and select Return to Normal, or change the volume back.

Introducing... RealTracks Artists David Wise & Shelly Justice!

For the first time ever Band-in-a-Box® can generate backing vocals with some amazing "oohs" and "aahs" vocal arrangements with RealTrack Set 278: Shiny Vocals Oohs and Aahs! Add male or female parts by renowned Nashville vocalists David Wise and Shelly Justice, and you'll LOVE the results!

David and Shelly have recorded with many different artists, including CeCe Winans, Dolly Parton, Don Henley, Donnie McClurkin, Jeremy Camp, Lady Antebellum, OneRepublic, Steve Green, and more!

RealTrack Set 278: Shiny Vocals Oohs and Aahs includes a three-part, six-voice arrangement – which you can use all together in your song or individually for more delicate textures! Listen to the demos for RealTracks Set 278 here.

Purchase RealTrack Set 278: Shiny Vocals Oohs and Aahs for just $29 here. It's also included in the Band-in-a-Box® 2018 for Windows PlusPAK, UltraPAK, and Audiophile Edition.

Learn more about Dave & Shelly when you visit their RealTracks Artist Bio page:
David Wise: http://www.pgmusic.com/realtracks.artists.php?a=150
Shelly Justice: http://www.pgmusic.com/realtracks.artists.php?a=151

#TechTipTuesday - Band-in-a-Box® Patch Updates

If you're ever experiencing an issue with your Band-in-a-Box program, make sure you have the most recent patch update for your version - this can be done at http://www.pgmusic.com/support.updates.win.htm.

Patch updates are released frequently, and are created by our development team to fix any reported bugs, tweak existing features within the program, update demos and other files as needed, and more!

To find out which version of the program you have, visit Help | About Band-in-a-Box within the program. You will see the full version number listing as:
Band-in-a-Box® for Windows
Version 2018 (512)

The number in parentheses is the build number. As you can see, my Band-in-a-Box is up to date and will continue to stay that way because I've selected "Automatically check for updates every 7 days" within the Help | Check for Updates.... option (you can set the number of days to a different number). This window will also look to see if you're version is up to date, so you don't technically have to visit http://www.pgmusic.com/support.updates.win.htm if you didn't want to!

Once you've installed your patch update (make sure the program is closed when you're doing this), give it another try - if you are still experiencing the same issue you can report it by contacting us directly, or you can post your result to the Forum thread that also announces the patch update, like our recent Band-in-a-Box 2018 Build 512 Update (Feb 15) post.

YouTube Find - How To Play SLOW A7 BLUES Guitar Solo With 4 NOTES

Check out one of EricBlackmonGuitar's latest videos, How To Play SLOW A7 BLUES Guitar Solo With 4 NOTES and you'll hear a great Band-in-a-Box backing track!

http://www.pgmusic.com/?vid=blJPIX-9YbE

...and you'll also learn how to play blues with just a few notes!

A Little Bit Of Me Music Video!

A great music video created by forum user Floyd Jane! https://youtu.be/qPrejgnwb4M?t=3600

This song was featured in a detailed "The Birth of a Song" video created by Floyd Jane - watch the complete video here:
http://www.pgmusic.com/?vid=qPrejgnwb4M

RealBand 2018 Build 5 Update Available!

RealBand 2018 customers can download the latest free patch update here: http://www.pgmusic.com/support.realband.htm#2018_5

Summary of Changes for Build 5
Added: When generating the input file for saving as an MGU/SGU SongMode128= is saved to the input file.
Added: Localization support for 2018.
Added: flyby hints to new dialogs.
Fixed: Save As with a filename greater than 128 chars could cause an error 123 plus access violation.
Fixed: Rebooting RealBand after a filename with 128 chars was saved could cause an access violation.
Fixed: Pressing the Change button in the Event List Window could result in an access violation if an event was not a Note event.
Fixed: When running in Win 10, and using BBW or PT to generate audio harmonies, an error would occur saying that you need BB 2011 or PT 12 to generate audio harmonies.
Fixed: Midi Thru Method was not being saved to the .INI file. It always reverting to Track-Specific when booting up RealBand, even if the user manually changed the setting to Global in the Midi Thru Settings dialog.
Fixed: Delete All Notes on This Peg menu item in notation window right-click menu was missing.
Fixed: Potential crash on exit (having to do with the DLL attempting to free up a dynamic array that was passed to it).

Band-in-a-Box® 2018 Build 512 Update Available!

Band-in-a-Box® 2018 for Windows customers can download the latest free patch update here: www.pgmusic.com/support_windowsupdates.htm#512

Summary of changes for Build 512 since 510 (Feb 15 2018):
Fixed: "Load SoundTrack Song" and "Load song with RealDrums Audio" buttons in the Sound Track dialog were not working.
Fixed: After returning Band-in-a-Box to factory settings the File Open dialog would default to the bb\Data\Lib directory.
Fixed: Choosing a custom chord sheet font would ignore any color choice made in the font selection dialog.
Fixed: Drum names were sometimes truncated in the RealDrums MultiDrums and Quicklist dialogs.
Fixed: Exporting a MIDI file might cause the error, "MIDIConv.exe no found".
Fixed: Mixer changes were not undoable, and would not cause user to be prompted to save their song when exiting.
Fixed: Static in RT2438 and other various RealTracks fixes.
Fixed: StylePicker database various updates. Some styles were displaying the wrong feel (swing/even) in notation. A few styles incorrectly showed missing Drums.
Fixed: The audio latency setting would increase every time leaving the Windows Audio Devices dialog.
Fixed: The Download Manager folder name defaulted to 2016 instead of 2018.
Updated: Help file.

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