Repairer for FEA Labs Dual Band Compressor Limiter

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brentonbassist
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Repairer for FEA Labs Dual Band Compressor Limiter

Post by brentonbassist » 24 Dec 2017, 21:13

Hi guys,

I have an FEA compressor which one day Just gave up on me. In bypass mode signal flows through (although a slight gain and tone reduction to not going through the pedal), but as soon as I engage it nothing comes through. The light comes on as though it’s engaged, but the gain reduction lights don’t show any gain reduction. If I crank up the gain on the channels, I do get a hiss. So I’m guessing it’s on the input side of the PCB.

So, I’m after advice on who to send it to for a looksie. I don’t want to spend heaps if not necessary. I live on the Gold Coast, so taking it to someone local or in Brisbane is fine, and I’m not opposed to posting it to someone either.

Halp?!


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bloodmason
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Re: Repairer for FEA Labs Dual Band Compressor Limiter

Post by bloodmason » 26 Dec 2017, 15:31

I had a problem with mine and it was just the footswitch on it not engaging on one of the poles. If you're slightly handy and have a multimeter just whip the bottom off & test the poles of the switches. They use a 3P3T switch so the LED might be turning on but the circuit not engaging properly. Of course it could have nothing to do with this but might be worth having a check in case it is just a dodgy switch or an obvious loose wire :)
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brentonbassist
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Re: Repairer for FEA Labs Dual Band Compressor Limiter

Post by brentonbassist » 26 Dec 2017, 16:46

Beautiful advice, thank you. I’ll give it a shot. I had pulled it apart to have a look at the PCB, but neglected looking at the jacks or switch much given that the LED was coming on and it worked in bypass mode. Did you just have to resolder, or replace the switch?


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blizzard
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Re: Repairer for FEA Labs Dual Band Compressor Limiter

Post by blizzard » 27 Dec 2017, 09:03

If you want to do more troubleshooting yourself, you can build an audio probe as per below. Basically, plug it into an amp and start the probe at the input and work through the signal path to find where it has failed.

Image

Most likely the switch has failed as stated above. To test if it's the switch out the soldering just test the continuity of each pole using a multimeter.

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petersemple
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Re: Repairer for FEA Labs Dual Band Compressor Limiter

Post by petersemple » 27 Dec 2017, 10:24

If it is a true bypass stomp switch with no fancy stuff going on like relay switching etc, then the switch is often the weakest link. From memory they average about 10000 activations before dying, which isn't all that many, especially if you get one that dies lower than the average.
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brentonbassist
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Location: Gold Coast, Australia

Re: Repairer for FEA Labs Dual Band Compressor Limiter

Post by brentonbassist » 27 Dec 2017, 10:47

Thanks for the advice guys. I’ve checked the jacks and switches this morning and all seem fine. The weird thing is that I very rarely adjust the settings on this pedal. I leave it as an always-on compressor, so the master switch has maybe been used less than 50-100 times and hadn’t been pressed between it working and not working. Really this pedal has not been used and abused much. It wasn’t even transported between it working and not. Just one day perfectly fine, the next nothing.

When I get home from lunch with the in-laws-to-be (can you say “Yay! How exciting!”?) I’ll check all the pots. I really like your suggestion, @blizzard, of the audio probe, but I don’t think my electronics knowledge or patience is good enough to follow such a complicated PCB. [emoji17]

Anyone have tips on good electronics specialists to send it to if it’s not a pot either?


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- '02 Warwick Streamer Stage II 5 with EMGs - '98 Warwick Thumb NT 5 with EMGs - Mesa Prodigy Four:88 - Markbass CL108 - FEA Labs, Empress, Korg, MXR, Eventide, Source Audio and Darkglass pedals -

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blizzard
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Re: Repairer for FEA Labs Dual Band Compressor Limiter

Post by blizzard » 27 Dec 2017, 11:15

As for repairers I believe Tym Guitars in the valley do effects repairs. Also Watson's Electronics (in Rocklea iirc) do a lot of MI amp repairs and could probably have a look.

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brentonbassist
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Re: Repairer for FEA Labs Dual Band Compressor Limiter

Post by brentonbassist » 27 Dec 2017, 11:38

blizzard wrote:As for repairers I believe Tym Guitars in the valley do effects repairs. Also Watson's Electronics (in Rocklea iirc) do a lot of MI amp repairs and could probably have a look.
Thank you!


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- '02 Warwick Streamer Stage II 5 with EMGs - '98 Warwick Thumb NT 5 with EMGs - Mesa Prodigy Four:88 - Markbass CL108 - FEA Labs, Empress, Korg, MXR, Eventide, Source Audio and Darkglass pedals -

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