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| | |-+  Light Meter System EL Strips
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Author Topic: Light Meter System EL Strips  (Read 15918 times)
Tristan.Miller
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« Reply #30 on: January 24, 2012, 01:07:24 PM »

http://canada.newark.com/triad-magnetics/vpt230-430/toroidal-power-transformer/dp/11R8057

They are not RARE things to find... I've used a couple on a few Tube-Amps I've made over the years...

This one should handle half-an-amp at 230 volts out...  =)
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brianroth
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« Reply #31 on: January 24, 2012, 07:00:33 PM »

This one is rated for around 200 mA:

http://www.antekinc.com/details.php?p=638

Ignore the 6V windings....

Bri



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Professional audio and video systems design/construction/service/common sense.

Now based in Salina, Kansas

http://www.BrianRoth.com
Westrek
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« Reply #32 on: January 26, 2012, 04:10:17 PM »

Have a few small touch ups to do, but it's finished.

I'll recap the do's and dont's soon.

Mike
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kakumei47
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« Reply #33 on: January 26, 2012, 04:16:33 PM »

Wow. That looks great!
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mell
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« Reply #34 on: January 26, 2012, 04:40:27 PM »

wow thats nice!!!
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Dualflip
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« Reply #35 on: January 26, 2012, 06:06:39 PM »

Amazing!
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LarryL
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« Reply #36 on: January 26, 2012, 08:47:59 PM »

Nice job!
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Westrek
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« Reply #37 on: January 28, 2012, 05:53:37 PM »

Here's some photos from the EL panel replacement:

The tape has to be trimmed on each side and the ends sealed with Light Tape sealing tape.

The length of each vertical strip is 5 3/8". I'm sure it's the same for the 600 series.

I have a 32 channel console and I bought 50 feet of tape and have about 3 feet left.

After cutting, crimping and sealing each strip, make sure and test each as you go along. The small nic terminals, once crimped to the tape, have to "burn in" to make good contact. I had probably a dozen or so strips that did not work, so there is some waste. Some times only half of the strip will light.  I had to purchase additional terminals and one more roll of seal tape.

Once you have the strips attached to a pexiglass panel, test again. I think it's best to buy Light Tape's smallest power supply just for testing, even if you plan to use something else for the whole system.

The new strips are not as ridged as the originals, so use some scotch tape to hold them down flat.

More later.

Mike

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Dualflip
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« Reply #38 on: January 31, 2012, 12:19:25 AM »

Thanks for the update Mike!

I wonder what ended up happening with the psu you bought? did it work with your MCI or did you have to modify something?

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Westrek
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« Reply #39 on: January 31, 2012, 04:31:33 PM »

I'm using the Light Tape power supply at the moment. As I thought, it's pretty sensitive and doesn't like when the relays switch from Peak to VU mode. It trips off and you have to recycle the power supply.

I have ordered a step up transformer from Mouser for around $15 that I plan to mount inside the LM power supply. There's a 120vac tap off the transformer for the existing luminescent supply, so this may be the answer.

I'll post the final chapter soon.

Also, I would be glad to help any other members who want to take on this project.  It sure looks great to have it lit up again!

Mike

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Dualflip
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« Reply #40 on: February 01, 2012, 11:55:04 PM »

Thanks for that update!, your desk is looking great!, ill let you know if i start refurbishing mine.

Keep us posted on the PSU issue.

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Westrek
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« Reply #41 on: February 03, 2012, 05:04:38 PM »

EL Strips "The Final Chapter"

I got a step up transformer from Mouser to increase the existing luminescent strip supply of the MCI LM power supply, which is 120vac to 240vac.

It worked out very well as the actual output voltage was 260vac.

The Light Tape power supply is closer to 300vac and is a little brighter (and I think maybe a little too bright).

The transformer I purchased is Mouser number 553-VPS230-110 and was  $15.40.

It's a Triad Magnetics VPS230-110. Also I changed the dropping resistor for the indicator light on the PS front panel from 3.9K to 8.2K.

Glad to help anyone who wants to re-light their 500 or 600 LM console.

I would recommend you purchase a small power supply( $18.95) to use for testing strips. It runs on a 9 volt battery, so it's less likely to electrocute you.

Here's a couple of photos of the transformer installation:
« Last Edit: February 03, 2012, 05:07:11 PM by Westrek » Logged
Dualflip
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« Reply #42 on: February 05, 2012, 01:08:41 PM »

Very nice! thanks for all the info, i will definitely do that to my console, so expect a few PMs from my side!  Grin Grin

Once again, thanks for sharing the knowledge!
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Roginator
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« Reply #43 on: February 06, 2012, 06:19:31 AM »

I bought 44+ original  MCI vu meters so ... LM are going out soon!! Smiley


If you guys need cards, new slightly used displays, PSU , parts .. front plastics....
Ill offer that on Sale very soon!! Smiley


waiting for warmer days to cut MCI ! Smiley

D
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Proud owner od 532D!! in legendary Criteria STUDIO B frame serial 039!!!! one of few fully transformers loaded MCI D series!
Westrek
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« Reply #44 on: March 25, 2012, 02:26:43 PM »

Thanks for the update Mike!

I wonder what ended up happening with the psu you bought? did it work with your MCI or did you have to modify something?



It's in the box with the other stuff heading your way!
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