EBS - Multicomp  [schematic]

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Re: EBS - Multicomp

Postby iv4nosky » 21 Dec 2012, 14:15

I found it! Its a zener diode of 10v and 0,2amps. Real reference is BZV49 C10 . You can buy the smd or just an diode an sold it.

Anyway there's still a resistence that I cant find. Could any user of a multicomp ebs measure the resistence of the picture? So I can replace it. Thanks!!
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Re: EBS - Multicomp

Postby deltafred » 21 Dec 2012, 23:55

My guess is that the 10V zener is for protection when using a power supply. (I could be wrong of course.)

If you can trace the circuit or draw the tracks and components around the resistor, zener and power socket then I am sure someone will be able to tell you an approximate value once it is known what it's function is.

Has the pedal been used with an AC power supply, or one with greater than 9V DC or, one with reversed polarity on the connector?
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Re: EBS - Multicomp

Postby pedalgrinder » 26 Dec 2012, 04:57

it's a pity there is no schematic for this one as it one of the better pedal compressor vs your ross/dyna comp garbage! but to overpriced to purchase to trace. damned if you do damned if you don't. :slap:
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Re: EBS - Multicomp

Postby sfx » 26 Mar 2013, 01:35

iv4nosky wrote:Hi , I have a death multicomp ebs. Its looks like that theres a resistance wich is burned and also a smd wich (107 p81) referecen is written over it. Does anyone any reference of a smd to replace it? I tried google but with no result during hours. Here is a pictures of the components:

[ Image ]

Thanks


Hey iv4nosky. I have a friend who has a Multicomp which has the exact same symptoms. Did you ever figure out the value of that one burnt resistor? Thanks!
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Re: EBS - Multicomp

Postby pedalgrinder » 27 Mar 2013, 11:22

how about we trace it and we can all help?
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Re: EBS - Multicomp

Postby jsaily » 02 Apr 2013, 10:18

I'm repairing one Multicomp for my friend and it has exactly the same burned zener and resistor. The nice people at EBS immediately replied to my enquiry that the zener is indeed (BZV49C10) and the resistor 5.6 ohms 1W (0207). I haven't replaced them quite yet but it was a royal pain to remove the potentiometer assembly from the way. Also the PCB traces under the burned components were toasted so they can't be replaced with SMD components. Fortunately I have suitable 10V zeners and resistors at hand in the lab... I'll edit the post when it's finally working.
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Re: EBS - Multicomp

Postby pedalgrinder » 02 Apr 2013, 13:23

since you have stripped yours as far as you have how about some in depth macro pics to aid a trace?
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Re: EBS - Multicomp  [schematic]

Postby chicago_mike » 02 Jul 2013, 15:37

You did not get these from me. :secret:
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Re: EBS - Multicomp

Postby atreidesheir » 05 Jul 2013, 13:14

chicago_mike wrote:You did not get these from me. :secret:

I did not thank you. :wink:
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Re: EBS - Multicomp

Postby pedalgrinder » 10 Jul 2013, 11:06

I just want to have his baby's!!! hahahaha :thumbsup
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Re: EBS - Multicomp

Postby koni » 31 Oct 2013, 12:55

Did anybody built this ????
I made an Perfboard Layout from the schematic ......
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Re: EBS - Multicomp

Postby migor » 05 Jan 2014, 16:47

I have long been looking for this schematic. Thanks.
Anyone have the PCB or another layout from the schematic?
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Re: EBS - Multicomp

Postby GodSaveMetal » 25 Oct 2015, 14:59

migor wrote:I have long been looking for this schematic. Thanks.
Anyone have the PCB or another layout from the schematic?

ANY PCB??????? THANKS!!!!!!!!!!
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Re: EBS - Multicomp

Postby GodSaveMetal » 25 Oct 2015, 15:08

Sweetalk wrote:Sorry for the double post but, I fixed it... I tried to replace the switch and didn't work, replaced it by a jumper and didn't work also. The jumper was shorting a via hole. Now it's working. I hope you like the pictures, let me know if you need something from the pedal while I still got it!. :mrgreen:


Please man PHOTOS from the PCB of the pots; yo would desold them?? also the TRIIMER pots; JACK IN and OUT and the lateral SWITCH; to make or somebody make a router PCB with the traces??? would you?? thanks a lot!!!!!
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Re: EBS - Multicomp

Postby Sweetalk » 30 Oct 2015, 15:23

GodSaveMetal wrote:
Sweetalk wrote:Sorry for the double post but, I fixed it... I tried to replace the switch and didn't work, replaced it by a jumper and didn't work also. The jumper was shorting a via hole. Now it's working. I hope you like the pictures, let me know if you need something from the pedal while I still got it!. :mrgreen:


Please man PHOTOS from the PCB of the pots; yo would desold them?? also the TRIIMER pots; JACK IN and OUT and the lateral SWITCH; to make or somebody make a router PCB with the traces??? would you?? thanks a lot!!!!!


I don't have it anymore :oops:
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Re: EBS - Multicomp

Postby Mbas974 » 04 Nov 2015, 09:17

Hi, can you gave me the equivalent DIP OP-AMP for :

TS921ID Single High Current
TS922ID Dual High Current
TS925ID Quad /w GND Ref

(reading this post I found rc4558 and LM833)
Thanks
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Re: EBS - Multicomp

Postby askwho69 » 10 Jan 2017, 19:35

Hello all, I need to ask please. I have this pedal and i play guitar , can i change C1 input cap and c3 output caps to a lower value to be more guitar friendly? What value if so?

Thanks
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