CTX-3030 coil pinout?

[bklein]

I received a couple CTX's owned by the same guy that has two bad 11" coils. I don't know how they died but what I notice is that, if looking with the key at top and counting counterclockwise, pins 1 and 2 and 6 and 7 would all be common on a good coil and on these pins 1 and 2 are common, 6 and 7 common, but no connection between them. Any idea what may have happened here?

[Op04]

Must look over Russian forum, look for post by Foma, he's done remake ctx3030 coil

[bklein]

Do you have a link? Google is failing me. I tried connecting the two sets of pins that normally would be connected with a good coil but the CTX didn’t like it. Lucky I didn’t kill it perhaps. I had tried to get at the board on one of these before but I could not find a chemical that affects the epoxy.

[Altra]

Here are some photos of a ctx coil. Don't remember where I found them, probably a Russian forum as Op04 suggested?

Use a hot air gun and pick to remove epoxy around where the amp pcb is located

If it is like all the other ml's The Tx will be the largest diameter coax, Rx the other coax along with two thin wires one is gnd and the other is data

[bklein]

Are there any videos of doing this? Must have taken a lot of time and patience. Not sure I would be able to fix the board not knowing what the parts are…. I always wanted to make a coil adapter using one of these - I want a Bigfoot for my CTX.

[Altra]

The photos above show a chemical attack. Probably methyl chloride. The heat gun method is simple. Heat the area under the strain relief and circuit board. Using a pen knife or other sharp tool pick away the soft epoxy. The key is not to over heat the plastic and epoxy. Heat the area while probing the epoxy as you feel it soften enough, stop heating and remove as much material as possible. Keep repeating.

Have not seen any videos

These are two coils I picked. Interesting once you get to the graphite layer it becomes very easy. Epoxy does not adhere to graphite very well.

[FOMA]

The question was about the pinout of the CTX3030 connector. Here is a picture.

[bklein]

Thank you very much Foma. This is encouraging in a way. If pins 7 and 1 don’t connect it means maybe the TX coil connection opened. When I use the coil it sounds normal - I’m going to try my Tri-field meter on it to see if the TX coil is not transmitting. The pcb might be good or else I’d get a “no coil detected” error. Are the TX coil connections (where the green/orange and grey/brown wires connect) near the cable input area and pcb?

[Op04]

Do you have a link? Google is failing me. I tried connecting the two sets of pins that normally would be connected with a good coil but the CTX didn’t like it. Lucky I didn’t kill it perhaps. I had tried to get at the board on one of these before but I could not find a chemical that affects the epoxy.

Here

[bklein]

I read through that using Google translate. Seems like two possible issues: broken coil (visible crack) or broken connection at the coil. They mention something called “ PG” - what is that?

[Op04]

As in that thread Foma said that "plug-in" similar to e-trac so will took a lot reading on subject. I was saw foxmd.ru sale ctx e-trac coil with external plug-in but now it dissapear

[ArchibaldSTM]

They mention something called “ PG” - what is that?

PG (ПГ) (search head) --- is a coil

[FOMA]

As in that thread Foma said that "plug-in" similar to e-trac so will took a lot reading on subject. I was saw foxmd.ru sale ctx e-trac coil with external plug-in but now it dissapear

I'm making a board takeaway from a CTX3030 coil. In this case CTX3030 works with any Explorer coils. No loss of sensitivity.

[Op04]

I'm making a board takeaway from a CTX3030 coil. In this case CTX3030 works with any Explorer coils. No loss of sensitivity.

Amazing work!

[bklein]

One coil has no TX output. Tri-field meter is great to diagnose this. The other is “no coil detected”, which is the attached:
All colored wires buzz ok to the cable connector.
Brown and green buzz together too.