:help: Cibola Sick! :help:

[POLEWAGGER]

I just came in from the coin garden. Was going to make a video comparison between the 9X8 & 5.75. After cleaning out the test plot, I carefully buried some dimes and nickels at precise depths. The problem was quickly discovered when I started losing my dime signal @7". 6 months ago, I got strong hits @8" in the exact same dirt.
To make a long story short, I pulled out the backup Treasure Cove, Famous Tails, etc. 1023. That thing actually was hitting on the 8" dime that the C didn't even peep on.
Something may have changed since the last time I had it apart and waterproofed the entire PCB except for the chip socket. (aircraft grade waterproofing)
Is there a "Super Tesoro Tech" on this forum? I have an Oscope and a bit of techie knowledge. Can someone point me to a test procedure to determine what's wrong and how to remedy? The 5.75 appears to have an equal loss of depth although I've only had it about a month. Is it possible that the chip has lost some continuity in the socket, and needs to be unplugged and plugged back in? What are typical causes of depth loss besides coil failure?
I also made an interesting discovery today that deserves it's own post...

 

[pkrska]

Did you just say you waterproofed the PCB?

Could this have something to do with your depth loss? If the chips are overheating it could affect their performance. Plus to apply the waterproofing, was it a hot application that cools to dry? Hmm.. heat again?

Can you take off that waterproofing and test again. I would like to know if it will make a difference.

You have to look at it like this: what changes did you do to it and reverse them, till you get your desired results. Good luck.

 

[POLEWAGGER]

HEAT??? To the point that performance is diminished?? Highly unlikely. The coating is a brush on, clear plastic paint. The same stuff that they use on the ECM in your car.
If the chips run hot, the coating shouldn't make a great difference. I could check with an infrared thermometer but I can't see that being an issue unless they're already outside their operating range. I put the coating on because I do a lot of damp hunting and I didn't want moisture or condensation to cause problems.
I was thinking maybe the plug in chip needs a better connection. I've seen many cases where a plug in chip will cause a problem that can be remedied by simply removing and replacing the chip, to restore a good connection between the pins and socket. Haven't taken it apart yet to see if that's the problem. Wanted to get some suggestions before opening it up and R&Ring the chip. The fewer times it gets opened, the better. I don't want to start chasing broken wires. Speaking of wires...I wonder if one might be hanging by a strand, throwing things out of whack?
It gets opened up tomorrow in any case.

 

[:Left4Dead]

I am not a metal detector tech, but I know a heck of a lot about electronic troubleshooting. First off , heat will not be instant and cause a loss of an inch. Also how hot do the boards really get?? Not that hot(even duck taped). Second if you have a lose wire it would not work correctly at all.
Now I would not start adjusting stuff, but since its warranty is already voided you should be ok. Adjust the Ground Balance on it and I bet you will be ok. Also is it the same exact dime you hit last year or a new one?


Mike

 

[POLEWAGGER]

I am not a metal detector tech, but I know a heck of a lot about electronic troubleshooting. First off , heat will not be instant and cause a loss of an inch. Also how hot do the boards really get?? Not that hot(even duck taped). Second if you have a lose wire it would not work correctly at all.
Now I would not start adjusting stuff, but since its warranty is already voided you should be ok. Adjust the Ground Balance on it and I bet you will be ok. Also is it the same exact dime you hit last year or a new one?


Mike

My C has GB mod.
It's possible I could have gotten carried away with my thinking. My original coin garden set up was with shiny dimes and nickels, set at depths that were not as precise as I placed them this time. I also used previously detected, tarnished coins this time. After opening it up and giving the chip a little rocking in the socket, and checking it out again in the garden, I think it's probably working up to par.
I got a little scared when I tried out my back up detector and it was hitting coins that the C wasn't. The problem with that is, I had the sens maxed and the disc backed off all the way. This is completely unrealistic for this (Treasure Cove or Famous Trails etc.1023) detector since it will chatter at just about anything in that state, including my (clean) high iron soil.
Bottom line is I think it's OK after all.
Thanks for the input guys!

 

[:Left4Dead]

I am not a metal detector tech, but I know a heck of a lot about electronic troubleshooting. First off , heat will not be instant and cause a loss of an inch. Also how hot do the boards really get?? Not that hot(even duck taped). Second if you have a lose wire it would not work correctly at all.
Now I would not start adjusting stuff, but since its warranty is already voided you should be ok. Adjust the Ground Balance on it and I bet you will be ok. Also is it the same exact dime you hit last year or a new one?


Mike

My C has GB mod.
It's possible I could have gotten carried away with my thinking. My original coin garden set up was with shiny dimes and nickels, set at depths that were not as precise as I placed them this time. I also used previously detected, tarnished coins this time. After opening it up and giving the chip a little rocking in the socket, and checking it out again in the garden, I think it's probably working up to par.
I got a little scared when I tried out my back up detector and it was hitting coins that the C wasn't. The problem with that is, I had the sens maxed and the disc backed off all the way. This is completely unrealistic for this (Treasure Cove or Famous Trails etc.1023) detector since it will chatter at just about anything in that state, including my (clean) high iron soil.
Bottom line is I think it's OK after all.
Thanks for the input guys!

My next question was going to be did you try it in AM or pinpoint mode. But it sounds like your all good. I have all the parts to mod mine too, I just cant pull myself to do it because I still have the warranty..

Mike