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ecua
Copper Member
26 Posts |
 Posted - 08/18/2009 : 07:00:00
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| Hi, currently, im having problem with my boss ls-2. To give a background, my set up is: im using behringer pb1000, in which the power supply is already included, regulated 9Vdc, with max of 1700 milliamps rating. I already had dd-7, rv-5, ce-2,mt2, sd1 and ls2. all these boss pedals are being power up using that behringer power supply, and these pedal is working perfectly using with that power supply but not with ls-2. whenever I switch to bypass coming from loop A or Loop B, there's a delay or sometimes no sound at all. But in loop a or loop b, it works perfectly. NOw, im considering to have PSA series from boss dedicated only to ls-2. But can anyone check what is the actuall output volatge of PSA230? or PSA120? I believe, they're same. By the way, the power supply im using, its actaul output voltage is 9.17V. Thanks |
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Dirk
Platinum Member
Netherlands
1309 Posts |
Posted - 08/18/2009 : 16:25:04
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My PSA-230 reads 10.34 volts, but your LS-2 should run perfectly from its own power supply.
Sometimes pedals are just quirky about what kind of adaptor you use.
I have a DD-3 that wouldn't put out the maximum delay length with an ACA adaptor, but it works fine with a PSA.
I also have an old Arion delay that needs it own power supply, it just doesn't work when daisy chained with other pedals, something to do with an internal earthing design. |
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Laurie
Double Platinum Member
Canada
4854 Posts |
Posted - 08/18/2009 : 17:10:34
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| My PSA's all read between 9.2 and 10 volts un-loaded. |
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ecua
Copper Member
26 Posts |
Posted - 08/19/2009 : 07:49:10
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| i tried to use the psu dedicated only to ls-2, still, same result. anyway, thanks guys for the effort measuring your psa adaptor. atleast, i had idea that when unloaded, it reads about 10V. in which my psu fall short (mine raeds only 9.17V, unloaded). |
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Dirk
Platinum Member
Netherlands
1309 Posts |
Posted - 08/19/2009 : 17:06:36
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Strange, maybe your LS-2 is faulty?
Have you tried it with a good battery? |
Edited by - Dirk on 08/19/2009 17:08:02 |
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Laurie
Double Platinum Member
Canada
4854 Posts |
Posted - 08/19/2009 : 17:29:42
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quote:
Originally posted by Laurie
My PSA's all read between 9.2 and 10 volts un-loaded.
My home-built PSU reads 9.1 volts unloaded up to full load, rock solid. And it powers all my pedals just fine. |
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ecua
Copper Member
26 Posts |
Posted - 08/20/2009 : 02:11:44
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quote:
Originally posted by Dirk
Strange, maybe your LS-2 is faulty?
Have you tried it with a good battery?
no. have tried with fresh battery. what do you think, should i try with alkaline battery or just ordinary 9v, just for testing? |
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Laurie
Double Platinum Member
Canada
4854 Posts |
Posted - 08/20/2009 : 06:52:00
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Something is not right with this... The LS-2 is not a complex pedal and should work on anything around 9V.
I'm thinking the power supply discussion might be a red herring? |
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ecua
Copper Member
26 Posts |
Posted - 08/21/2009 : 03:48:11
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quote:
Originally posted by Laurie
Something is not right with this... The LS-2 is not a complex pedal and should work on anything around 9V.
I'm thinking the power supply discussion might be a red herring?
yah... ls2 should be fine when using 9V adaptor. I check the specs of IC that been used and it shows that it should be at 9V supply |
Edited by - ecua on 08/21/2009 03:50:59 |
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ecua
Copper Member
26 Posts |
Posted - 08/31/2009 : 11:14:58
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| I tried with fresh battery, ( measured 10.4V ), still, same problem occurs. it seems there's something wrong with my ls2. anyone had schematics for ls2. I been trying lately searching the Net but couldn't find one |
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paisleyfender
Bronze Member
Germany
70 Posts |
Posted - 08/31/2009 : 11:58:37
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That problem reminds me a bit of the issue I had with a CS-3 lately:
http://www.bossarea.com/forum/topic.asp?TOPIC_ID=7621
I finally gave up on repairing that one because even when I changed the switching FET transistor it only worked fine for one more day, just to show the same problem again.
I think it is a cold solder joint or broken wire or faulty transistor problem. |
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ecua
Copper Member
26 Posts |
Posted - 09/01/2009 : 02:55:38
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| That's is also what im thinking. There's something wrong on the transistor used for buffer. The problem is, i cant figure out which one is it. It's difficult to trace it.. |
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Laurie
Double Platinum Member
Canada
4854 Posts |
Posted - 09/01/2009 : 04:56:41
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| Check the soldering around Q3, Q8 and Q9... |
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ecua
Copper Member
26 Posts |
Posted - 09/01/2009 : 06:31:45
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quote:
Originally posted by Laurie
Check the soldering around Q3, Q8 and Q9...
ok, I'll try this one when I got home.. thanks... |
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ecua
Copper Member
26 Posts |
Posted - 09/05/2009 : 13:34:43
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Laurie,
Thanks for your "tips". Right now, its working perfectly. thanks
regards,
ecua |
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Topic |
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Boss PSA actual output voltage
