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Messages - flester

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1
Amplifier Discussion / Re: Inkjet printed circuit boards
« on: June 08, 2020, 09:43:36 AM »
Probably expensive but should get cheaper over time

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2
Amplifier Discussion / Inkjet printed circuit boards
« on: June 07, 2020, 05:05:01 AM »
I have not yet tried to make PCBs but this looks interesting

https://www.hackster.io/news/print-instant-circuits-from-an-inkjet-with-silver-tape-743962a056ef

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** Removed duplicate posts and fixed link in original post **

3
The Newcomer's Forum / Re: Orange Crush 12 repair
« on: May 15, 2020, 02:22:10 PM »
Thanks for the tip. I now have some lead solder and it is indeed easier to use.

I decided to use wire links instead of repairing the broken traces and have good connections now. I am left with 2 issues, which I can live with but would be nice to fix if possible. One is that there's still quite a lot of hiss.  Also the overdrive still goes crazy from about half way up, after which I get a very loud low frequency buzz.  While half way is more than enough overdrive for me most of the time,  theres obviously still something wrong.
The pot is new, works smoothly as measures correctly (250K linear). All pots have been cleaned with contact cleaner. Could this point to the opamp or the clipping diodes?

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4
The Newcomer's Forum / Re: Orange Crush 12 repair
« on: May 14, 2020, 04:44:40 AM »
You're right about cleaning up my soldering. Yes, its lead-free solder. And I will continue checking the ground connections.

5
The Newcomer's Forum / Re: Orange Crush 12 repair
« on: May 13, 2020, 12:23:04 PM »
No crackles when I wiggle any of the pots or jacks.
Joe, your mention of ground connections focused me. I think I soldered the overdrive pot, middle leg incorrectly to ground. See before and after photos below. What do you think?


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6
The Newcomer's Forum / Re: Orange Crush 12 repair
« on: May 13, 2020, 09:19:02 AM »
Thanks. I will try those checks.

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7
The Newcomer's Forum / Re: Orange Crush 12 repair
« on: May 13, 2020, 06:12:18 AM »
Correction:.
1.At low levels, with overdrive at zero, a. Pretty good clean signal with a lot of hiss via internal speaker.
b. Signal disconnects intermittently when using headphones

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8
The Newcomer's Forum / Re: Orange Crush 12 repair
« on: May 13, 2020, 06:08:45 AM »
I'm having another go at this as I have a bit of time on my hands. I didn't do anything with the opamp but replaced the gain and overdrive pots and repaired some broken pcb traces. I'm left with the following issues.
1. At low levels, with overdrive at zero, a. Pretty good clean signal with a lot of hiss via internal speaker.
b. Signal disconnects intermittently.

3. At higher levels, signal sort of drops out as the note fades l. Sound clip below
https://drive.google.com/file/d/1k-Kf7-oBOZkOzntB7SPu0VswwtfftZrZ/view?usp=drivesdk

Any ideas? I can show bits of my schematic if I can get it finished

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9
I can't see how to vote. Am I being stipid? Either way I vote for 2 because I want one!

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10
Software / Re: Zoom G5 software
« on: March 29, 2020, 08:50:17 AM »
Or any other way to get acoustic instruments talking to a computer.

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11
Software / Re: Zoom G5 software
« on: March 29, 2020, 08:47:03 AM »
I have my Zoom working now as an interface to the PC. I am using Jamkazam for  online jam sessions. Works fine for electric and electro-acoustic but can't get a good  sound with a dynamic mic. Any suggestions on that?

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12
Software / Re: Zoom G5 software
« on: February 19, 2020, 03:32:54 AM »
Thanks all. The Zoom has a built in USB interface. I've got it working now using Audacity. And with the Zoom software I've been able to edit the patches to what I want.

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13
The Newcomer's Forum / Re: Laptop charger 3 core cable
« on: February 18, 2020, 07:13:29 AM »
Will just try it anyway. If it works and theres no smoke or sparks then its OK.

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14
The Newcomer's Forum / Re: Laptop charger 3 core cable
« on: February 18, 2020, 04:00:34 AM »
Yes I know switched mode can be noisy but have been gathering old supplies and finding quiet ones by trial  and error. Do you think I can just leave the 3rd wire disconnected?

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15
The Newcomer's Forum / Laptop charger 3 core cable
« on: February 17, 2020, 09:06:50 AM »
Planning to use 19.5v laptop charger as a power supply for amps and other projects. It has a 3-core cable, red, blue and black. I only expected '+' and '-', whats the 3rd for?

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