tomcat

Re: PASSIVE RELAY-BASED CONTROLL ROOM KITS BUILD/SUPPORT TREAD
« Reply #240 on: November 10, 2010, 09:19:50 AM »
2x VGA = 2 cables ;)

I found a cable with 5x Coax and 5x extra wires. This will do the trick ... hopefully  :)


Re: PASSIVE RELAY-BASED CONTROLL ROOM KITS BUILD/SUPPORT TREAD
« Reply #241 on: November 11, 2010, 03:09:34 PM »
hello
i'v got a problem. I'v just finished to populate the PCBs, and when i fire up, i can hear a Click and few pushbutton are lighted, but the Digit are non lighted, and when I turn the Alps encoder, nothing happens, no clicks. Same things if I push a button, nothing happend, the dark one stay dark, and the lighted ones stay lighted.

Where is the probleme ?

please help me.
Thanks a lot best regards.

Re: PASSIVE RELAY-BASED CONTROLL ROOM KITS BUILD/SUPPORT TREAD
« Reply #242 on: November 11, 2010, 05:11:36 PM »
another observation, the IC4 onb the control Card become really hot after jus few seconds of turning on.

tomcat

Re: PASSIVE RELAY-BASED CONTROLL ROOM KITS BUILD/SUPPORT TREAD
« Reply #243 on: November 11, 2010, 05:41:22 PM »
Check your soldering. The ic shouldnt get hot. Measure if 5V is ok.

Re: PASSIVE RELAY-BASED CONTROLL ROOM KITS BUILD/SUPPORT TREAD
« Reply #244 on: November 12, 2010, 05:45:32 AM »
hello again, thanks for the answer.

I checked the soldering, but i dont see anything special, but i measure just something around 3V instead of 5.  the electrolytics Condo are really hot too in few seconds. Maybe IC4 is dead ?

I'll check the solderings again. ???


tomcat

Re: PASSIVE RELAY-BASED CONTROLL ROOM KITS BUILD/SUPPORT TREAD
« Reply #245 on: November 12, 2010, 06:11:25 AM »
Maybe you did the same like me and solderd the electrolytics wrong way in ;)

Pull the semis and try again. Measure the power without semis and check the electrolytics. Are we talking about the controller board or the main board?

Re: PASSIVE RELAY-BASED CONTROLL ROOM KITS BUILD/SUPPORT TREAD
« Reply #246 on: November 12, 2010, 07:32:00 AM »
I'm talking about the controller board. the elecrolytics are in the same direction as in this schema http://i251.photobucket.com/albums/gg291/diy33609/contr_btm.gif.

Maybe the A6833 is in the wrong way.

Could it be dangerous for it or for other componenent ?

I'll check this

tomcat

Re: PASSIVE RELAY-BASED CONTROLL ROOM KITS BUILD/SUPPORT TREAD
« Reply #247 on: November 12, 2010, 08:11:09 AM »
On the Socket for the A6xx you see one corner different/keyed. If you soldered the socket wrong way ... well you have a problem. Otherwise you need a lot of brutal force to insert the chip in a different way then keyed. And yes i think it will destroy the chip if you insert it wrong way.

What means "maybe the a6833 is the wrong way"?

rob_gould

Re: PASSIVE RELAY-BASED CONTROLL ROOM KITS BUILD/SUPPORT TREAD
« Reply #248 on: November 12, 2010, 08:54:28 AM »

Hi Igor,

I was a little bit premature in saying that I had fixed my monitor controller :(

I thought the issue was going to be fixed when I resoldered a loose wire going to the trim switch.

Unfortunately after resoldering the wire to the switch, nothing on the control board works.  It looks like this wire wasn't the problem.

I have 12V going into the control board, and 5V after the rectifier so power isn't a problem 

I have removed all connections to the trim switch altogether just in case it is bad in some way, but I don't see why this would cause a problem anyway.

Can you suggest anything to try next?  I must admit, the schematic isn't helping me much because it's all to do with digital contro - not my speciality! 

Do you think it's possible that the CRM chip is fried?  I get the same result with or without the CRM chip in place when I turn the power on...

Cheers

Rob





Studio furniture, modular synth cases and more...

www.gouldcaseworks.nl

Re: PASSIVE RELAY-BASED CONTROLL ROOM KITS BUILD/SUPPORT TREAD
« Reply #249 on: November 12, 2010, 10:08:44 AM »
Finally He is Alive.


The a6833 was in inserted in the wrong way, maybe with a little brutal force.
thanks for your answers Tom, and thanks igor for this wonderfull Kit.

here is it :

http://www.youtube.com/watch?v=2BJk7z7OB1E


tomcat

Re: PASSIVE RELAY-BASED CONTROLL ROOM KITS BUILD/SUPPORT TREAD
« Reply #250 on: November 12, 2010, 11:38:33 AM »
Lucky bastard ;) Didnt think that the chip will survive this treatment  :)


Btw. if anybody needs just the remote control case like you see in the picture above, i will sell mine soon.
« Last Edit: November 12, 2010, 11:41:29 AM by tomcat »

Igor

Re: PASSIVE RELAY-BASED CONTROLL ROOM KITS BUILD/SUPPORT TREAD
« Reply #251 on: November 14, 2010, 08:09:14 PM »
Quote
I was a little bit premature in saying that I had fixed my monitor controller Sad

I thought the issue was going to be fixed when I resoldered a loose wire going to the trim switch.

Unfortunately after resoldering the wire to the switch, nothing on the control board works.  It looks like this wire wasn't the problem.

I have 12V going into the control board, and 5V after the rectifier so power isn't a problem

I have removed all connections to the trim switch altogether just in case it is bad in some way, but I don't see why this would cause a problem anyway.

Can you suggest anything to try next?  I must admit, the schematic isn't helping me much because it's all to do with digital contro - not my speciality!

Do you think it's possible that the CRM chip is fried?  I get the same result with or without the CRM chip in place when I turn the power on...

Hi Rob, please check if any keyboard inputs are not connected.
I.e. pins 15....22 are on +5V thru pull-up resistors,
and there are pulses at pins 2...6.

Check SPI going to A6833, 8,9,10 of microcontroller - if lines are not shorted.
Check without 74AC125 in case of whatever.

Maybe, microcontroller chip gone, maybe, something is shorted at control board.
No prob, I have one spare control board, and can send it for free with
pre-prog'd chip at chip self cost + shipping. Feel free to mail/PM.
http://www.ij-audio.com
(new site hopefully will be up in July)

rob_gould

Re: PASSIVE RELAY-BASED CONTROLL ROOM KITS BUILD/SUPPORT TREAD
« Reply #252 on: November 15, 2010, 05:30:17 PM »

Thanks for replying Igor.  I need to ask a couple of beginner questions  :-[

Please can you just explain quickly :

Quote
please check if any keyboard inputs are not connected.
I.e. pins 15....22 are on +5V thru pull-up resistors

So I'm looking for +5V in these places (red dots)?



Quote
and there are pulses at pins 2...6.

Never done this before - so I'm looking on a scope for regular 5V square wave pulses at a certain frequency?


Quote
Check SPI going to A6833, 8,9,10 of microcontroller - if lines are not shorted.
Check without 74AC125 in case of whatever.

Not a problem...

Quote
No prob, I have one spare control board, and can send it for free with
pre-prog'd chip at chip self cost + shipping. Feel free to mail/PM.

This could come in really useful if I can't find the problem using my limited troubleshooting skills ;)  I'm away with work for a few days so it'll take me a while to get to this, but please keep the spare parts for me.

Cheers,

Rob
Studio furniture, modular synth cases and more...

www.gouldcaseworks.nl

rob_gould

Re: PASSIVE RELAY-BASED CONTROLL ROOM KITS BUILD/SUPPORT TREAD
« Reply #253 on: November 21, 2010, 05:47:22 PM »


I'm back at home now and had a go at this testing.

I can see pulses of some kind on pin 2 of the controller chip, but they are not square waves.  I'll try and get a pic.

Pin 6 doesn't seem to be doing anything.

Can you have a look at my questions in the post above?  Having had a go at this, it's obvious I have got the wrong idea.  There isn't 5V on any of pins 15 - 22 so I'm guessing there should not be?

Cheers,

Rob
Studio furniture, modular synth cases and more...

www.gouldcaseworks.nl

bluesbaz

Re: PASSIVE RELAY-BASED CONTROLL ROOM KITS BUILD/SUPPORT TREAD
« Reply #254 on: November 21, 2010, 09:15:06 PM »
everyone seems to be out of the relay you used original the C93418
I believe these would work but im double checking
the C93402
http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=PB1125-ND
-s

tomcat

Re: PASSIVE RELAY-BASED CONTROLL ROOM KITS BUILD/SUPPORT TREAD
« Reply #255 on: November 22, 2010, 06:34:39 AM »
Yes these will work

Igor

Re: PASSIVE RELAY-BASED CONTROLL ROOM KITS BUILD/SUPPORT TREAD
« Reply #256 on: November 22, 2010, 04:04:45 PM »
Rob:
Seems uP is dead.
Talk to me, shipping address etc, will put control PCB inside, 'cause there is one spare (without audio part).
http://www.ij-audio.com
(new site hopefully will be up in July)

bluesbaz

Re: PASSIVE RELAY-BASED CONTROLL ROOM KITS BUILD/SUPPORT TREAD
« Reply #257 on: November 23, 2010, 12:29:36 PM »
Any reason i shouldn't use this for the encoder?
i dont want to pay a 20$ to get the unit from newark/farnel
http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=102-1762-ND

Igor

Re: PASSIVE RELAY-BASED CONTROLL ROOM KITS BUILD/SUPPORT TREAD
« Reply #258 on: November 23, 2010, 06:50:37 PM »
Should work. Some encoder types using different A/B pin arrangement.
Worst case, pins 1 and 3 can be swapped if turning enc CW the level goes down.
http://www.ij-audio.com
(new site hopefully will be up in July)

choko

Re: PASSIVE RELAY-BASED CONTROLL ROOM KITS BUILD/SUPPORT TREAD
« Reply #259 on: November 24, 2010, 06:04:01 AM »
Hi igor,

I didn't receive my 3crm full kits... i paid it the 17th october... is it normal??
what's append?
regards

choko
choko-mastering.com


 

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