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Inside the Radias (pics)
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Timo
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Joined: 24 Jan 2002
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Location: Kaoss central, England

PostPosted: Wed May 27, 2009 8:43 pm    Post subject: Inside the Radias (pics) Reply with quote

Opened up the Radias to do an initial reccy on its innards today, so thought you might be interested as to what's inside. Smile

My pics are by no means comprehensive. I was mainly looking with regards to maintenance of the white rotary encoder and the main volume knob.

Apologies for the quality of the pics, such is life I only found out that I took the pics in the wrong mode after I'd put the Radias all back together again! Consequently they're a bit grainy.



^ 1) with the backplate removed.



^ 2) A perspective shot showing the layers of PCBs. Top-left is the PCB for all the jack sockets, it's still attached to the main silver front chassis.



^ 3) from the other side.



^ 4) I completely removed the whole silver front chassis (front panel and socket plate), and rotated it 180º. Only the PCBs remain. In the above shot I'm just moving the jack socket PCB out of the way.



^ 5) The PCBs by themselves. With the jack socket PCB now out of the way, the dotted red circle toward the right shows roughly where the white encoder is attached (to the very lowest PCB).



^ 6) Above shows the three solder "feet" of the rotary encoder attached to the lowest PCB. To get to this layer (in order to replace my encoder) removal of the upper PCB layers will be needed when I come to do it.



^ 7) shows the footprint of the volume knob pot (I will be replacing this knob too).



^ 8 ) Turned the other way. This pic shows the front of the Radias with the chassis/fascia completely removed. You don't even need to take off any of the knobs!



^ 9) Something to be VERY aware of if you ever do this yourself: When you take the chassis off the front fascia, there are lots of small transparent pieces of plastic that fall out (such as circled).

These transparent pieces of plastic act as magnifiers for the LEDs, as the the LEDs themselves are actually countersunk by quite some way (about 1cm deep) beneath the front fascia. These bits of plastic bridge the gap, and to the outer world they look like real LEDs.



^ 10) As you can see there are quite a few of them! They all fall out together (if you tilt the PCB past 90º), as nothing holds them in. Great care must be taken to not to lose any. They're hard to spot when they fall out (as many of them are for single LEDs, in which case they're even smaller), and they could be very easily scattered.

So it appears with a little courage, and a lot of labelling (there are lots of different types of screws used on the main silver fascia and below), and with care not to lose the plastic LED inserts, you should be able to do maintenance on the Radias (if after the warranty has expired). Now to see if Korg will sell me a new encoder and volume pot.... Smile
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nemmo
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PostPosted: Mon Jun 08, 2009 6:52 am    Post subject: Reply with quote

I posted this thread in our blog ( http://musicobject.blogspot.com ) . Korg reviews are welcome !
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YorkshireLad



Joined: 09 Jan 2009
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Location: Scarborough

PostPosted: Sat Jun 13, 2009 8:45 pm    Post subject: Reply with quote

Thanks for that Timo, it's always interesting to see what's under the hood!
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Akiss



Joined: 04 Jun 2008
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PostPosted: Sat Jun 20, 2009 10:35 pm    Post subject: radias Pics inside.... Reply with quote

Thanx for posting these... You never know when they will become handy, and good luck putting it back together, it doesn't look that easy...
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rfoshaug
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Joined: 18 Apr 2006
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Location: Norway

PostPosted: Mon Jun 22, 2009 10:07 am    Post subject: Reply with quote

Nice pictures, Timo. I always wondered what the Radias looked like on the inside. Wink

How cool it would be (and also a lot of risky soldering work) to replace the LEDs with a different color, both for the red indicator LEDs, the backlit buttons and the backlights for the knobs. Smile

But to get to the LEDs you'd have to dig your way through a lot of electronics.
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mantras



Joined: 08 Aug 2007
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PostPosted: Fri Apr 23, 2010 11:15 am    Post subject: Reply with quote

"Now to see if Korg will sell me a new encoder and volume pot...."

How did this work out Timo?
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gdh
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PostPosted: Fri Apr 23, 2010 11:43 pm    Post subject: Reply with quote

Damn, I was going to take mine apart as the volume pot is scratchy but that is not going to happen now. Thanks for the post & pics.
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Rosen Sound
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PostPosted: Sat Jan 29, 2011 9:53 pm    Post subject: Reply with quote

how much did a new encoder cost ya?
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Timo
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PostPosted: Sat Jan 29, 2011 10:20 pm    Post subject: Reply with quote

robbinhood wrote:
how much did a new encoder cost ya?


From KorgUKSupport.co.uk

510370520001
Part Name: ROTARY ENCODER
Part Reference: EC16B242041S (D) L=15MM
Retail Price Inc VAT: £1.52

(Rotary encoder, the big white jog dial)

510374524021
Part Name: ROTARY VR
Part Reference: RV112BCF-40-20A-B10K
Retail Price Inc VAT: £1.52

(Variable resistor, aka volume pot)

Plus P&P.

Korg UK Support only supply to UK customers I think.

Price and part-numbers may well be different for you as you're based in USA. VAT = value added tax here in the UK.
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Timo
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PostPosted: Sat Jan 29, 2011 10:22 pm    Post subject: Reply with quote

gdh wrote:
Damn, I was going to take mine apart as the volume pot is scratchy but that is not going to happen now. Thanks for the post & pics.


It's not so bad. I've done worse:

[Access Virus Indigo open surgery]
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Last edited by Timo on Sat Jan 29, 2011 10:24 pm; edited 1 time in total
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Rosen Sound
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PostPosted: Sat Jan 29, 2011 10:23 pm    Post subject: Reply with quote

Timo wrote:
robbinhood wrote:
how much did a new encoder cost ya?


From KorgUKSupport.co.uk

510370520001
Part Name: ROTARY ENCODER
Part Reference: EC16B242041S (D) L=15MM
Retail Price Inc VAT: £1.52

(Rotary encoder, the big white jog dial)

510374524021
Part Name: ROTARY VR
Part Reference: RV112BCF-40-20A-B10K
Retail Price Inc VAT: £1.52

(Variable resistor, aka volume pot)

Plus P&P.

Korg UK Support only supply to UK customers I think.

Price and part-numbers may well be different for you as you're based in USA. VAT = value added tax here in the UK.


Thanks for the very very swift reply!
one of my encoders WAS acting up yesterday, after giving it the turning-constantly treatment its good again! but i think i may buy a few just in case.

So judging by your prices this will cost me less then 10 bux! thanks so much!
btw... how hard was it to solder then in? i have my fair share of experience with soldering but if you have any tips that would be wonderful Very Happy

thank you! Smile
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Timo
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PostPosted: Sat Jan 29, 2011 10:36 pm    Post subject: Reply with quote

robbinhood wrote:
btw... how hard was it to solder then in? i have my fair share of experience with soldering but if you have any tips that would be wonderful Very Happy

thank you! Smile


No worries. Just so happens I'm actually placing the order for the pots this coming monday after I emailed them yesterday to make sure they still have them in stock. I've kinda lived with the problems, but want to get it in tip-top condition. I'll post a load of photos like I did my Virus (two posts up) as it seems others have the same issues.
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Rosen Sound
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PostPosted: Sun Jan 30, 2011 12:34 am    Post subject: Reply with quote

it would be greatly appreciated if you post pics Smile
thanks man!
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Mack



Joined: 20 Dec 2009
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Location: Finland

PostPosted: Tue Feb 15, 2011 5:42 pm    Post subject: Reply with quote

nice.

hah, i want my radias to look as badass as in picture 8!
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ToneNoob



Joined: 27 Jan 2007
Posts: 3

PostPosted: Thu Feb 17, 2011 11:54 am    Post subject: Reply with quote

How electronics savvy are you. Any chance of rigging up a digital output?
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