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Author Topic: Randall Commander 1 (rg120-115)  (Read 882 times)

ToadMeister

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Randall Commander 1 (rg120-115)
« on: May 05, 2017, 09:43:07 PM »

Searched the net, found a link finally, but it was broke!
So I joined the schematic together with GIMP.
Here it is:
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If things didn't break, we wouldn't learn how to fix them or know how they work, and things wouldn't get made for us to fix.
And there'd nothing to break.

J M Fahey

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Re: Randall Commander 1 (rg120-115)
« Reply #1 on: May 06, 2017, 12:31:05 AM »

Thanks Toadmeister :)   :dbtu:
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ToadMeister

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Re: Randall Commander 1 (rg120-115)
« Reply #2 on: May 06, 2017, 10:01:49 AM »

I am hoping having One page to work with rather than 2 halves with overlapping components to join by eye will help someone.
So...I fixed that, now to fix my amp......when the spirit of Juan Valdez takes over my bloodstream and brain.
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If things didn't break, we wouldn't learn how to fix them or know how they work, and things wouldn't get made for us to fix.
And there'd nothing to break.

DrGonz78

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Re: Randall Commander 1 (rg120-115)
« Reply #3 on: May 06, 2017, 04:11:10 PM »

Also +1 for using GIMP, great program!!  :dbtu:
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A person who never made a mistake never tried anything new. -Albert Einstein

ToadMeister

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Re: Randall Commander 1 (rg120-115)
« Reply #4 on: May 06, 2017, 09:30:03 PM »

Quite versatile, not just for art, but for manipulating too.
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If things didn't break, we wouldn't learn how to fix them or know how they work, and things wouldn't get made for us to fix.
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ToadMeister

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Re: Randall Commander 1 (rg120-115)
« Reply #5 on: May 08, 2017, 08:46:52 PM »

I took the original pic (would be nice if this person who took the pic could scan a better copy, but this was a pic just to say, "I got this with it")
Then I GIMP'ed it as well.
It was the best I could polish this turd within my time constraints.
A lot of noise in my 'enhancement', but maybe it will speed up continuity testing.

If someone can provide a better copy, it would be greatly appreciated if you could post it here.
Thanks
PS Is that a pelican in the upper middle?
« Last Edit: May 08, 2017, 09:57:43 PM by ToadMeister »
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If things didn't break, we wouldn't learn how to fix them or know how they work, and things wouldn't get made for us to fix.
And there'd nothing to break.

Boprikov

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Re: Randall Commander 1 (rg120-115)
« Reply #6 on: May 10, 2017, 01:38:32 AM »

Thank you ToadMeister! I have an orange stripe Randall 120H. It is in good condition, but nice to have a schematic.  :dbtu:
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ToadMeister

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Re: Randall Commander 1 (rg120-115)
« Reply #7 on: May 10, 2017, 02:12:52 AM »

Working on a better PCB schematic, may as well, since I'm probing continuity.
Trying to label components, and add lines, colour schemes.

Will I finish, probably not, should just lift the board, flip it, check for bad solders, take a pic, flip the pic, and draw components on the pic?
I really don't want to lift the board, then I will worry about stressing other wires, and break solders.
I'll just keep probing, it just helps to know where to go, luckily with a flashlight a lot of the copper foil lines are easy to see.

By the time I fix this rig, I'll probably be able to build my own amp.

Going to do some major probing on my days off.
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If things didn't break, we wouldn't learn how to fix them or know how they work, and things wouldn't get made for us to fix.
And there'd nothing to break.

blackcorvo

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Re: Randall Commander 1 (rg120-115)
« Reply #8 on: December 01, 2017, 02:31:58 PM »

There's this japanese website that increases the resolution of pictures (I guess it's one of those "machine learning algorithm" deals at work). Here's a link if you wanna check it out: http://waifu2x.udp.jp/index.html

Attached goes the image after going throught the process, with 2x the original resolution. It's not perfect, but it makes it easier to see the traces, hopefully.
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