How to: DIY Servo Remover - Page 4 - ZX6R Forum
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post #46 of 228 Old 07-11-2011, 09:06 PM Thread Starter
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for some reason it isn't working perfectly, and i can't figure out why. I have my guesses, but not 100% sure.

in theory an axial resister shouldn't make a difference, but i will be pissed as hell if i find out that's what the problem is.

I've been talking to a guy that sells these and he might be able to work out a deal for me to test a servo buddy, and ultimately dissect it. I'm gonna get it when i come back from vacation, which will be next weekend (the 23rd)

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post #47 of 228 Old 08-01-2011, 11:04 AM Thread Starter
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Ok just a little update, decided to take the plunge and drop $60 to put an order in for a ServoBuddy, so when it gets here I'll test ride it for a little, then dissect it and post my findings...

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post #48 of 228 Old 08-01-2011, 04:30 PM
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Ok just a little update, decided to take the plunge and drop $60 to put an order in for a ServoBuddy, so when it gets here I'll test ride it for a little, then dissect it and post my findings...
you ARE the man!

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post #49 of 228 Old 08-04-2011, 12:15 PM Thread Starter
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well...i got the servo buddy in the mail today...cut off the heat shrink to reveal a nice thin coating of some sort of black epoxy that is just thick enough to block part numbers, values, and the paths for the parts on the top side of the circuit. Apparently it's using some sort of voltage regulator tho. IDK if I'm going to be able to do anything with this...but i'll see what happens.

Here's what I'm dealing with:


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Last edited by Chaos; 08-04-2011 at 12:32 PM.
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post #50 of 228 Old 08-04-2011, 12:31 PM Thread Starter
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well i just tried removing a little of it and unfortunately there's no way to preserve any of the values on the surface mounted reistors. I can't ohm them out either...unfortunately I'm gonna have to call it a loss before I damage this thing beyond belief. Wish there was an easier way, sorry guys, I have failed you. So until someone can get a hold of a schematic or or a servobuddy without epoxy on it, I can't do anything.

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post #51 of 228 Old 08-04-2011, 01:10 PM
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damn. oh well. it was worth a shot. does it still work so you can put it on your bike?
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post #52 of 228 Old 08-04-2011, 07:45 PM
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well i just tried removing a little of it and unfortunately there's no way to preserve any of the values on the surface mounted reistors. I can't ohm them out either...unfortunately I'm gonna have to call it a loss before I damage this thing beyond belief. Wish there was an easier way, sorry guys, I have failed you. So until someone can get a hold of a schematic or or a servobuddy without epoxy on it, I can't do anything.
a heat gun will melt the epoxy off it. just be carefull not to over heat the circuit. iv done it before with a heat gun on a high setting. makes for high heat and fast action.
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post #53 of 228 Old 08-05-2011, 11:06 AM Thread Starter
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a heat gun will melt the epoxy off it. just be carefull not to over heat the circuit. iv done it before with a heat gun on a high setting. makes for high heat and fast action.
Tried that too...it pulled off the coating that was on the surface mounted resistors :\ I know there's a schematic out there for Ivans servo eliminator, I'm gonna try to use that and see what i can do with it

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post #54 of 228 Old 08-05-2011, 11:22 AM
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I'm wondering if that 14 pin IC is just digital logic, purpose built, or a MCU. Anyway of poking around at it with an external power supply and some type of meter?
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post #55 of 228 Old 08-07-2011, 09:39 AM Thread Starter
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I have a strong feeling the servo buddy is using the LM3900N amplifier. I really hope this will work. However I'm tight on cash right now, so if someone else wants to try this out first, by all means go for it and let us know how you made out!

Here's the next schematic I'm going to start working with:
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Last edited by Chaos; 08-07-2011 at 09:43 AM.
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post #56 of 228 Old 08-21-2011, 08:57 PM
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ok so i figured out why its not working for us!!! the setup is right!!

symptoms:
1st startup, no FI light.
shutdown
2nd starup, FI light on.
shutdown
3rd startuo, FI light on. repeat.

unplug unit, wait 1 minute and reconnect. no FI light.
restart, FI light on.
bla bla bla
this seems to be the consistant issue. same goes for the guys on the ZX10 site that i post on with ZX6's



heres the trick, DISCHARGE the cap between starts. works everytime. momentary switch can be put from pos to neg on the cap. pushing the button will drain the cap so u can start the bike with NO FI LIGHT!!

at high revs everything works too.

now the trick to make a perm. fix....i leave it up to you guys.

chaos...the new schematic looks good. have you tried it yet?
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post #57 of 228 Old 08-22-2011, 07:20 AM Thread Starter
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ok so i figured out why its not working for us!!! the setup is right!!

symptoms:
1st startup, no FI light.
shutdown
2nd starup, FI light on.
shutdown
3rd startuo, FI light on. repeat.

unplug unit, wait 1 minute and reconnect. no FI light.
restart, FI light on.
bla bla bla
this seems to be the consistant issue. same goes for the guys on the ZX10 site that i post on with ZX6's



heres the trick, DISCHARGE the cap between starts. works everytime. momentary switch can be put from pos to neg on the cap. pushing the button will drain the cap so u can start the bike with NO FI LIGHT!!

at high revs everything works too.

now the trick to make a perm. fix....i leave it up to you guys.

chaos...the new schematic looks good. have you tried it yet?
Interesting...i had a feeling it had something to do with the cap needing to discharge...makes sense y there's a voltage regulator in there now...

I haven't had the time to check that new schematic yet. But i think im going to research how to make the cap discharge itself when there's no current running through it...I'd rather stick to that schematic as it's a lot easier to use with a lot less parts lol. I'll keep you guys informed

Quick update: after only a few minutes of searching I've come up with a couple of ideas of how to discharge the capacitor when the bike is off. Use some kind of light (LED) or a high valued resistor across the capacitor. I'll give it a shot sometime this week and let you guys know how it works out. If anyone else wants to give it a shot, by all means go for it! Just be sure to post your findings.

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Last edited by Chaos; 08-22-2011 at 07:28 AM.
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post #58 of 228 Old 08-22-2011, 07:45 AM
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I have a 09 zx6r with a slip on exhaust and no FI light issues
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post #59 of 228 Old 08-22-2011, 08:01 AM Thread Starter
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I have a 09 zx6r with a slip on exhaust and no FI light issues
Obviously you didn't read the OP...or remove the servo motor...

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post #60 of 228 Old 08-22-2011, 08:44 AM
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Whats the benefit of removing the servo motor?
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