Looking For Whites TDI Mod Info

[Paul (CA)]

Thanks Carl,

Appreciate you pointing out C59 and C60, it's use. And indeed, C50 was to short the capacitor, an era on my part not grounded as I had suggested.  

Thanks again,

Paul

[Glithium]

On 11/30/2022 at 1:12 PM, snakejim said:

A Reg Modified TDI

 

 

Thank you that yellow circuit board must be the key I can't really make it out but with these picks a little asking around on the right forums should do the trick.

[Glithium]

On 12/1/2022 at 6:35 AM, snakejim said:

Better photos of TDI mods.

Oh thanks I didn't see these.

[Glithium]

On 12/1/2022 at 11:40 AM, PI-Man said:

Better picts looks like a resistor and a couple of diodes n some wire wrap type wires used a jumpers. Hard for me to see color code on resistor n numbers on diode, but then again my eyes have been getting worse need a magnifier for that. Hopefully when Carl sees it he knows what values they might be of components.  It looks like a simple mod.  I wonder if the diodes in there are to stabilize the current in that circuit mod.  Interesting.  Of course it could be 2 resistors and a diode for a regulator.  Tough one not being able to see under the magnifier.  All bear with me I have chemo brain and it’s tough sometimes for me to write stuff down — darn Side effects.  My grammar and chain of thought stinks sometimes.  Thanks for picts I’ll keep thinking it..

I posted it on Geotech just to see if anyone else has an idea.

[snakejim]

17 minutes ago, Glithium said:

I posted it on Geotech just to see if anyone else has an idea.

I sent my modified TDI to Carl Moreland who is "Geotech", to dissect it and do a schematic. I guess you missed my post.

[Glithium]

23 hours ago, snakejim said:

I sent my modified TDI to Carl Moreland who is "Geotech", to dissect it and do a schematic. I guess you missed my post.

I did at the time I was on my lunch break 

[ZacMonkeys]

Hi there, I've newly acquired a TDI Pro Oz. I'm interested in doing any mods that might improve it.

From what I can gather from this thread (which seems like the most current and active thread on the topic I can find on Google) there are 3 mods:

Sensitivity / Gain boost mod, involves shorting capacitor C50, either permanently or with a switch. Applies to all models?

The "improved filtering" mod, involves replacing cap C59 and C60. This mod is only from the original, non pro model?

And the coveted "smoothness" mod, involves the extra PCB from the late and great man Reg. For all models?

Is this correct? Are there other mods?

I'm particularly interested in the smoothness mod. Has there been any updates on this? I'm quite handy with electronics and making things. I can cut and PCBs on a CNC machine and know my way around a soldering iron, so Id be happy to help out with this PCB if needed ?

[ZacMonkeys]

Oh I left out the vernier reduction mod, for improved fine control of the ground balance, or other? knobs.

On which knows are these vernier mods beneficial?

[Joe D.]

On 7/5/2023 at 12:19 AM, ZacMonkeys said:

Oh I left out the vernier reduction mod, for improved fine control of the ground balance, or other? knobs.

On which knows are these vernier mods beneficial?

    Hello,

   Don't know if this will help, but I saved this Ebay listing in case I wanted it done to one of my TDI SL's! I have been using one on the beaches that had some mods done! Just did a photo grab, so not clickable! Seller explains about what he can make!???