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One Love
Copper Member
12 Posts |
 Posted - 05/11/2007 : 03:42:36
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| I have a chain of Boss Effects: (From amp) DM-2, CE-2, PH-1r, newer GE-7, newer CS-3, and CS-1. The issue I am having when I daisy chain all the effects with a 9vdc PSA adapter, the PH-1r will not power up. It will simply blink momentarily and not turn on. I can have it connected to the daisy chain, and when I plug in the 1/4" signal cable with the newer two boss pedals, it will immediately turn off. With a battery and the connection from the daisy chain disconnected, it will work just fine. Or if I simply connect the said power adapter to the PH-1 only, it will also fire up just fine. The only mod is the 3.9K resistor was removed to make the LED light up brighter. I have searched and read all the messages in this forum about the ACA and PSA adapter issues, but I am either missing something or this is something else altogether. Please help!! Thank you in advance. |
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One Love
Copper Member
12 Posts |
Posted - 05/11/2007 : 15:08:08
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| I forgot to add that the PH-1r is a silver screw model. |
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Dr. Bob
Moderator
Australia
6593 Posts |
Posted - 05/11/2007 : 15:47:07
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Hi One Love
The PH-1r SS was designed to use an ACA 12V non-regulated adapter.
See this link
http://www.bossarea.com/loadpage.asp?file=boxes/ph1r.xml
And read this link, about using an 12V ACA pedal with a 9V PSA adapter.
you might have to change the position of the DC daisy chain.
you wont have to change Audio position of the PH-1r
http://www.bossarea.com/other/aca.asp
Here is an extract from the second link.
From Bossarea
Powering ACA pedals with a PSA power supply
Powering the older pedals designed for 12V DC input with either a newer ACA or PSA adapter will not work very well. The voltage drop over the resistor and diode will prevent the pedal from getting enough power and its LED will usually only glow faintly. The solution is to use a daisy chain and plug in another pedal designed for the newer ACA or PSA adapter. The lead between the two pedals will short the resistor diode pair and the pedal will receive full power.
Or you could get a Tech, unless you know about soldering & doing some mods ( no insults to your skills & abilities ). to mod the pedal to work only on PSA adapters.
I leave the diode, in circuit, but I short out the low value resistor, in series with it.
The value of the resistor can vary, but is always around 300 to 470 ohms.
Hope this helps, and watch the combined current consumption, of your pedals.
You never listed which country you are from ?
Regards Dr. Bob  |
Edited by - Dr. Bob on 05/11/2007 15:49:52 |
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One Love
Copper Member
12 Posts |
Posted - 05/11/2007 : 22:15:20
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| I have already seen those I do have soldering skills. And as a matter of fact, I am a Tech from North Texas. Becuase I have read the issue of PSA and ACA, I did short out the diode and resitor by simply desolering the connection of the blue wire from the center conductor of the power input to the purple wire that leads to pad 5 or 6. I can't remember because I'm at work. But it did not help. Something else, I believe is going on with the pedal. Or maybe not, I may just be not connecting point A to point B in my head. |
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One Love
Copper Member
12 Posts |
Posted - 05/12/2007 : 16:36:29
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| Hmmmm....something else that is interesting worth noting is now, the PH-1r will not work off of a battery with simply a stray signal cable plugged in the input. It will merely momentarily and lightly blink. The light will not stay on. O the other hand, when I plug the PSA adapter to it, the light will stay on. |
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Dr. Bob
Moderator
Australia
6593 Posts |
Posted - 05/12/2007 : 17:02:59
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Hi One Love
It's really Great  to have another Tech person on the Forum 
Maybe you missed something when you did the mod?
I Usually just short out the low value resistor, on my ACA type pedals.
Please keep us informed of your findings..
Regards Dr. Bob |
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bossarea
Forum Admin
United Kingdom
3652 Posts |
Posted - 05/13/2007 : 00:40:58
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| If you just removed the resistor instead of shorting it, you may have broken the ground connection between the jack socket and the AC socket. |
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Dr. Bob
Moderator
Australia
6593 Posts |
Posted - 05/13/2007 : 15:49:48
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quote:
Originally posted by bossarea
If you just removed the resistor instead of shorting it, you may have broken the ground connection between the jack socket and the AC socket.
Good point Bossarea, I guess I missed that one.
Maybe if he puts the wiring back to normal, & just puts some jumpers in the place of the Res. & Diode, it might work again.
Including with the battery.
Regards Dr. Bob |
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One Love
Copper Member
12 Posts |
Posted - 05/13/2007 : 22:06:45
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| I have check all connections and they are good. When I short out the resistor, it momentarily blinks. Nothing more. I don't understand it, but it sure is irritating. |
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Dr. Bob
Moderator
Australia
6593 Posts |
Posted - 05/14/2007 : 12:54:15
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quote:
Originally posted by One Love
I have check all connections and they are good. When I short out the resistor, it momentarily blinks. Nothing more. I don't understand it, but it sure is irritating.
Hi One Love
When you do the above test One Love, does your pedal actually work effect wise, as some OLD Boss pedals had momentary on LED's.
Bossarea, from your memory, was the PH-1r a momentary on LED pedal?
And his is a SS model...
This may explain, why One Love's pedal is operating this way.
Regards Dr. Bob |
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One Love
Copper Member
12 Posts |
Posted - 05/14/2007 : 22:03:33
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| No. I am aware of the momentary LED's of older units. This one is not. It does not work effect-wise at all unless I have it as the only effect in the chain and I have the power adapter plugged to it. Just to see what is going on, I snagged another PH-1r off of eBay to test voltages and whatnot. I will let you know my results. |
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Dr. Bob
Moderator
Australia
6593 Posts |
Posted - 05/15/2007 : 08:53:41
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quote:
Originally posted by One Love
No. I am aware of the momentary LED's of older units. This one is not. It does not work effect-wise at all unless I have it as the only effect in the chain and I have the power adapter plugged to it. Just to see what is going on, I snagged another PH-1r off of eBay to test voltages and whatnot. I will let you know my results.
Hi One Love
Good luck, let us know what you find.
Is there a chance that the other, or one other pedal is loading down your power supply.
It's really strange, that it works on its own, but not with other pedals.
Sorry I haven't been too much help, on this one.
I really hope you sort it out.
Regards Dr. Bob |
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One Love
Copper Member
12 Posts |
Posted - 05/15/2007 : 17:20:32
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I have measured the current draw from all the pedals and so far I am up to around 150mA and the power supply is rated for 200mA. I can even hook it up to one other pedal and it will immediately fail. It's bothersome. My prediction is that I will receive the new pedal. It will work. I will sell the other one on Ebay mentioning the issue, losing a little money, but being able to play my favorite Phaser on my pedalboard. I really am too aggravated to want to fix this pedal. Who knows, I may tinker with it.
My issue right now is whether I want to keep my CS-1 now that I have the CS-3 with the Monte Allum's Opto mod. That thing rocks! I have modded my BF-2, GE-7 SD-1, CE-2, and DS-1 as well. |
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Dr. Bob
Moderator
Australia
6593 Posts |
Posted - 05/15/2007 : 17:56:50
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Hi One Love
Send me a PM (Private Mail) If your are thinking of selling your strange acting PH-1r.
I might be interested, depending on what you want for it.
I am curious to know, what fault condition, causes the strange behavior.
And if you would be willing to send it to Australia.
Not wanting to change the subject too much,
but is the CS-3 Opto mod really that good?
It sounds great on the sound demo's, but I you can hear other effects in there as well, like distortion & delay.
As a Tech, I respect your opinion.
I guess you have been reading about, my frustrations with my standard, CS-3, & why I built a Dyna Clone.
I'm sure we'll talk more about your Opto moded CS-3
Maybe in a new thread?
Which DS-1 mod did you get from Monte?
Regards Dr. Bob |
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One Love
Copper Member
12 Posts |
Posted - 05/17/2007 : 15:37:40
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| I got the Rectifier mod with the DS-1. Old Marshall city. Smooth, yet CUTTING gain. |
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Dr. Bob
Moderator
Australia
6593 Posts |
Posted - 05/17/2007 : 16:11:28
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quote:
Originally posted by One Love
I got the Rectifier mod with the DS-1. Old Marshall city. Smooth, yet CUTTING gain.
Hi One Love
Please tell me a bit more, about the CS-3 Opto mod, & how it sounds.
What sort of settings do you use.
And did it really make that much of a difference?
It's hard to tell the truth from the hype, but this mod gets some serious recognition.
Regards Dr. Bob |
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Topic |
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PH-1r issue in daisy chain
