Author Topic: Made a new repair video. 1986 Roland Digital Reverb  (Read 1677 times)

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Offline OilsFan

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Made a new repair video. 1986 Roland Digital Reverb
« on: May 31, 2015, 11:52:26 pm »
I made another repair video. This time it is a Roland DEP-5 Digital Effects Processor circa 1986. Pretty cool first gen multi effects from Roland. Please note that it's pretty long and I am no Dave though I do like to parrot him and DrCassette from Youtube.   ;D I'm an entertainment electrician by trade so electronics is not my forte. Just a secondary field I've picked up from servicing gear in the field. Audio geeks might enjoy.

https://youtu.be/AIhylmi_YM8
 

Offline Shock

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Re: Made a new repair video. 1986 Roland Digital Reverb
« Reply #1 on: June 01, 2015, 04:16:38 am »
I have some tips...

When you clean the pots you can flood it first with a cleaner while you manipulate the pot vigorously, then use air and then contact lubricant. That way the movement of the wiper will clear debris while the fluid will remove it. You can also meter the pot before and during this process and see what progress you made.

Adding new solder (flux) can help make those type of joints easier to remove. Break sweat joints if required carefully with a small tool such as a screw driver and look for pin wiggle before removing.

When using your desoldering gun gently place it down on the joint to achieve melt, press the button and move the tip for a few seconds in a circular motion to manipulate the lead. Then lift the gun before releasing the button, this will reduce sweat joints and you can do a wiggle test before removing.
« Last Edit: June 01, 2015, 04:18:50 am by Shock »
Soldering/Rework: Pace ADS200, Pace MBT350
Multimeters: Fluke 87V, 117, 27/FM     >>> Fluke 51/52 Thermometer Parts Required <<<
Oszilloskopen: Rigol DS1054Z, Phillips PM3065
 

Offline obiwanjacobi

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Re: Made a new repair video. 1986 Roland Digital Reverb
« Reply #2 on: June 02, 2015, 06:00:15 am »
Haven't seen the video yet, but did subscribe.  :-+

Do you know http://music-electronics-forum.com ? Might be a better audience for music related stuff...
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Offline obiwanjacobi

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Re: Made a new repair video. 1986 Roland Digital Reverb
« Reply #3 on: June 02, 2015, 06:12:55 pm »
Just watched your video. I had a Roland repair just like that one (GS-6 it was, I think). Had the same symptoms but in my case it was a broken PCB track so the CPU sensing input was floating, causing it the make up all sorts of values. Took me quite a while too before I had that one figured out...
Arduino Template Library | Zalt Z80 Computer
Wrong code should not compile!
 

Offline OilsFan

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Re: Made a new repair video. 1986 Roland Digital Reverb
« Reply #4 on: June 03, 2015, 07:27:49 am »
Haven't seen the video yet, but did subscribe.  :-+

Do you know http://music-electronics-forum.com ? Might be a better audience for music related stuff...

Thanks for the tip! Never heard of that one but it looks good!
 


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