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ChristoMephisto
Platinum Member
Canada
1288 Posts |
 Posted - 01/24/2008 : 14:43:24
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R30 is the 470ohm resistor to the left of D4
I got the same slow power up problem with my PD-1 and a ACA apadter
No problem in a daisy chain tho |
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leonard d rock
Silver Member
Philippines
301 Posts |
Posted - 01/25/2008 : 00:50:09
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| thanks christo. perhaps i should take some electronics classes huh? i now one difference about music and electronics is that you can't learn electronics "by ear." some basic electronics knowledge would help me just like a music theory would. |
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ChristoMephisto
Platinum Member
Canada
1288 Posts |
Posted - 01/25/2008 : 16:32:13
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I just used the service notes for the OD-1 to locate it, not having one myself. You could desolder them and solder in jumpers from the bottom. It can be tight and awkward with some pedals from the top.
The plastic insulator shields it from the metal plate.
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Dr. Bob
Moderator
Australia
6593 Posts |
Posted - 01/25/2008 : 16:47:56
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Hi guys
You can also take the simpler route.
Just solder jumper links (short bits of wire) on the solder side of the components.
That way if you ever sell it off, you can just unsolder the links & presto, all the original components are still there. (not lost in a box under your bed).
Unless you went Ape Sh!t with the soldering Iron.
As Christo said, the plastic insulator will protect the links from the metal of the chassis.
Regards Dr. Bob |
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leonard d rock
Silver Member
Philippines
301 Posts |
Posted - 01/26/2008 : 11:09:00
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| thanks for the tip dr. bob. its pretty tight in the board and i had to borrow my wife's tweezers. by the way, does changing the red led with a different color change the sound? i changed the od-1 to yellow and there was no problem, but when i changed the ds-1's to green, the distortion and tone changed, so i put back the red led and the problem was gone. is this unusual? i wanted to change the leds to have more color in my pedalboard. |
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Dr. Bob
Moderator
Australia
6593 Posts |
Posted - 01/26/2008 : 15:29:47
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quote:
Originally posted by leonard d rock
thanks for the tip dr. bob. its pretty tight in the board and i had to borrow my wife's tweezers. by the way, does changing the red led with a different color change the sound? i changed the od-1 to yellow and there was no problem, but when i changed the ds-1's to green, the distortion and tone changed, so i put back the red led and the problem was gone. is this unusual? i wanted to change the leds to have more color in my pedalboard.
Hi leonard d rock
A Red LED turns on at approx. 1.5VDC
A Green LED turns on at appox. 1.75VDC
Hmmmmmm thinking cap on ............ 
Where you running it off a battery or plug pack?
Was it a high intensity or super bright green LED?
Was it a known good battery.
How much REAL difference was there?
Does your DS-1 have a mod or maybe the Seeing Eye type mod?
Maybe Christo .. will chime in here,
but I need more info than your simple explanation above.
Regards Dr. Bob |
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ChristoMephisto
Platinum Member
Canada
1288 Posts |
Posted - 01/26/2008 : 16:17:27
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Your tone changes when you swap out the led for a different color?
How bizzare. My guess is its stealing/borrowing too much power and is causing a power draw on the rest of the circuit. I've seen some Keely mods, and others who change the LEDs, changes the resistor to the LED, in the SEM DS1's case, the R35 went from 3k9 to a 20k.
Do you have any leds that measure the same as your original? Maybe you grabbed a dud, a powerful dud. |
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leonard d rock
Silver Member
Philippines
301 Posts |
Posted - 01/27/2008 : 06:26:21
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| hi dr. bob and christo. the ds-1 is a totally stock mit which i bought last november. i was running it off a regulated power pack which a pro tech made for me a few years ago.both tone and distortion knobs sounded as if they were barely on even if they were already at almost full. it seemed like something was strangling the pedal. i checked all leads and even had it alone but it still sounded bad. i don't have a multimeter at home but the guy at the electronics supply checked the leds out for me when i bought them. anyway, maybe some solder spit or something shorted out some components but when i returned the original led, the problem was gone. thanks and mabuhay! (long life) |
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Dr. Bob
Moderator
Australia
6593 Posts |
Posted - 01/27/2008 : 07:40:05
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Hi leonard d rock
You didn't answer my pervious questions.
Maybe you got a anti-mabuhay! (short life) LED.
Lots of people change the LEDs on their pedals,
this is the first time I have ever heard of your fault.
maybe you over-heated & damaged the LED
DID The Green LED turn on?
Regards Dr. Bob |
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leonard d rock
Silver Member
Philippines
301 Posts |
Posted - 01/27/2008 : 09:30:37
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| ohh. yes dr. bob, the green light turned on brightly. i turned the pedal on and off several times, no problem with the led. only the sound was affected. still mabuhay! |
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One-Way
Bronze Member
New Zealand
104 Posts |
Posted - 01/27/2008 : 09:48:11
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I dont know what happened to my original reply re fixing my OD1.
I ended up removing all the switches and taking everything out of the case and found wires broken off or with dodgy connections. The old copper wires work harden and break off at their connections on the PCB. Once I repaired all those it works like a charm although I haven't used it much lately as Im playing clean or just using the amps OD or distortion. |
Edited by - One-Way on 01/27/2008 09:51:31 |
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Dr. Bob
Moderator
Australia
6593 Posts |
Posted - 01/27/2008 : 13:21:11
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quote:
Originally posted by One-Way
I dont know what happened to my original reply re fixing my OD1.
I ended up removing all the switches and taking everything out of the case and found wires broken off or with dodgy connections. The old copper wires work harden and break off at their connections on the PCB. Once I repaired all those it works like a charm although I haven't used it much lately as Im playing clean or just using the amps OD or distortion.
Hi One-Way
Yes, you are right, leonard d rock, seemed to have take the thread sideways a bit,
& Christo & I tried to come to the rescue.
It's nice to hear that you have your precious OD-1, up and running again.
Your findings or the wires & solder joints becoming brittle & breaking off,
Maybe an indication of things to come, with our Older.Vintage Boss pedals & Gear.
But Lets hope not....
Regards Dr. Bob |
Edited by - Dr. Bob on 01/27/2008 13:26:38 |
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ChristoMephisto
Platinum Member
Canada
1288 Posts |
Posted - 01/27/2008 : 15:11:30
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Hey One-Way
sorry about that, threads get hijacked all the time
glad to hear you got yours up and running again |
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leonard d rock
Silver Member
Philippines
301 Posts |
Posted - 01/28/2008 : 00:14:25
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| oneway, dr. bob and christo, sorry about hijacking the thread "sideways" guys.thanks for all the help.mabuhay! |
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Dr. Bob
Moderator
Australia
6593 Posts |
Posted - 01/28/2008 : 00:55:59
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quote:
Originally posted by leonard d rock
ohh. yes dr. bob, the green light turned on brightly. i turned the pedal on and off several times, no problem with the led. only the sound was affected. still mabuhay!
Hi leonard d rock, Christo & Guys
Sounds like you somehow connected it up without, or shorted out the current limiting resistor for the LED, & were dragging down the main 9V rail.
No wonder it changed the sound so drastically.
Regards Dr. Bob |
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Topic |
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OD1 playing up again
