Recapping TS24

Founded in 1973, Soundcraft first made its mark with the launch of the Series 1, the first mixing console in a flightcase.

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Re: Recapping TS24

Postby Ilari » Tue Jun 22, 2010 2:55 pm

Thanks a lot for very helpful answers! I will get to work with the TS24 very soon.
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Re: Recapping TS24

Postby rekorder » Thu Jul 29, 2010 4:00 am

Jim Williams wrote:If you want to lower noise, use LME49740NA quads for the pan buffers. Add local .1 uf psu bypass caps. Use LME49720NA for the fader opamps. Change the feedback resistors to 4.75k ohms. Change the gain shunt resistor to 2.21k ohms. Change the feedback cap from 100 pf to 22 pf NPO mono ceramic. Add two .1 uf psu bypass caps from pin's 4 and 8 to ground.


Hi Jim,

that sounds promising but don't the LME's draw much more current than the TL's? Did you compare the current-draw of a modified and a non-modified TS24-channel and if so: How much is the difference? I just wonder if the PSU's can handle this.

Chris
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Re: Recapping TS24

Postby Jim Williams » Thu Jul 29, 2010 9:31 am

5 ma vs 1.8 ma for each section. About the same as OPA4134. Most TS-24's have 2 power supplies, one for 1-24, the other for the rest. They are high current psu's and can handle it. There is one in Chino, CA running fine with those mods. Dead quiet, clear and clean, lot's of low end punch. It was fitted with all new TKD faders and a rebuilt EQ and mic preamp. Those psu's were also rebuilt with 18,000 uf mains caps to replace the stock 4700 uf caps.
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Re: Recapping TS24

Postby soliceseven » Wed Feb 06, 2013 7:07 pm

Jim Williams wrote:It takes 1 1/2 hours to recap a TS-24 input here. Add another hour to replace all the alps switches. I pay 70 cents for those from Mouser. This requires a quality desoldering tool and the skill to use it. When done, the module should look like it was never touched after the flux is washed away. Modules done here are identified by the shinny silver solder rework over the original tin/lead solder.

Most of the 8 pin flex strips from the mute switch block are falling apart, I replace those with modern strips to avoid problems. Most of the common 47 uf 25 v caps are replaced with either Panasonic FM 220 uf 25v or Nichicon HE to avoid low end phase shift. Then you have those EQ caps, filter caps, opamps, mic pre transistors, psu bypass caps, etc.



Jim how much does this run per channel if you do it?
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Re: Recapping TS24

Postby Jim Williams » Fri Feb 08, 2013 12:38 pm

Typically about $300 per input. This also includes re-designing the mic preamps into trans-amps. I replace the small switches for $5 each.
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Re: Recapping TS24

Postby Ilari » Sat Apr 13, 2013 12:31 pm

What would be the best source in EU for buying alps switches for ts-24? And are all of the switches used in ts-24 still available?

I have many crackling switches and some of them doesn't pass signal trough at all... I've cleaned them couple of times with caigs deoxit and tried pressing them back and forth a thousand times, but few of the switches are still completely dead.
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Re: Recapping TS24

Postby RockSC » Mon Apr 22, 2013 5:23 am

Check out

Audiomaintenance.com

Got all switches needed there.
....looking for a TS12, TS24, Sapphyre or 3200 somewhere in, or close to Germany.
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Re: Recapping TS24

Postby Ilari » Sat Jan 28, 2017 1:32 pm

Bumping up an old topic!

What would the modifications for better sounding master section be?
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Re: Recapping TS24

Postby Jim Williams » Mon Jan 30, 2017 10:42 am

Here the master mix sum stage is rebuilt with low noise discrete transistors and a very low noise opamp. Good el caps are used with film bypasses. Past that most of the el caps are removed, a direct coupled audio path. Those little balanced output cards are removed and rebuilt with low noise opamps, the caps are removed. Same with CR and studio feeds, it's an accurate monitoring path.
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