Did you draw the schematic by eyeballing the traces on the boards?

 

No that's just a typical 3 phase rectifier, and Voltage limiters were often just a Zener diode with a reverse bias at the value you wanted to maintain. The drawings were from Wiki.

 

To have a finer view of the components, could you scan both circuit boards including their rear side ? You can cut away the bulky connectors to lay the regulator circuit as flat as possible.
The 40Amp Maxi-Fuse protects the regulator from being fried by the battery in the case of a short circuit on it's output side. This could be interesting to understand what can be done if either the Maxi-Fuse or the regulator dies without using the cell phone

 

just fyi...

if your voltage regulator fries, the stock vr is 74505-09A and retails for $221. you can buy the chrome replacement, 74622-09 which retails for $179. so buying the chrome one will save you almost $50.....

 

Here you go:






Top





Undeside of top





Top of bottom piece





Bottom

 

Vernal, thank you for sharing sharper pictures.

I spotted at least 20 surface mount transistors (Q1>>Q20) on the "Gecco" board held by pins (PIN1>>PIN11), so we can forget about repairing this thing
When you search the printed board reference RTF D-1 94V-0 you end up on a Chinese web page ...

I guess the best thing to do if this component fails is to disconnect it completely and run from the battery through the 40A Maxi-Fuse.

 

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Thanks for posting that,it shows it was overheated melting electrical components in the process.

Thats why i never install a chrome cover for looks on the v-reg & keep it clean of dirt at all times to ensure it gets full airflow for max cooling at all times .

And thats not taking into account the front wheel & fender that are already blocking x-amount of airflow from getting to / cooling the volt reg so covering it with chrome cover for looks and or not keeping i clean of dirt can reduce cooling even more with is a RCP for the v-reg to overheat & fail prematurely.

scott

 

Scott,

It's interesting you brought up the (over)heating of the VR. I went to a dealership to purchase a chrome VR. The parts guy told me that several customers have mentioned that their chrome VRs were overheating and failing. I asked him if he was aware of similar problems with the chrome covers and he said no.

I took his advice and bought a chrome VR cover. I have had it for a couple of years now without a problem.

 

Actually this was a working Voltage Regulator. The bike it came off of had been in a wreck and the backing material where the plugs came out cracked a bit. What looks like burnt material is just some of the rubber backing material that sticks to everything. There is no "burnt" odor indicating anything was ever hot. I used pics and small screwdrivers to get it that clean but some of that material just would not let go.