Rattly GMP mystery partly solved -what is this bit and do I need it?

Only for the discussion of the XP Gold MAXX Power Metal Detector.
Post Reply
User avatar
Lowland
Posts: 5360
Joined: Wed Mar 29, 2017 9:18 am
Location: scottish middle march
Has thanked: 5907 times
Been thanked: 2895 times
Contact:

Rattly GMP mystery partly solved -what is this bit and do I need it?

Post by Lowland » Tue Mar 05, 2019 10:24 am

Morning-the devil makes work for idle hands :D
So ,bored this morning and decided to apply minimal technical skill to solve
My rattly GMP.
(Littleboot thinks I’m subconsciously trying to break it so I can get an equinox B-) )
Here’s the story,
Plasticky rattling noise from something adrift inside the GMP control box
Was starting to bug me,didn’t seem to affect its operation but was annoying.
So loosened the four tiny screws in the corners of the control fascia
(Watch out for the little nuts falling out and disappearing)
Undid the large nut at the back where the coil lead plugs in.
The circuit board slides out the housing.
And there was the problem-the piece of plastic seen in the photos was just floating about.

If anybody knows what it is and what it does ,would be useful info ::g

It’s back together now and starts up and works fine.

On a happy note I did spot a v4 chip-which means I could go wireless?
Thanks for having a look
You do not have the required permissions to view the files attached to this post.
Last edited by Lowland on Tue Mar 05, 2019 10:47 am, edited 1 time in total.


Shiny equinox600- taped up spade-dodgy elbow
.....................deeper bliss......................

User avatar
Easylife
Posts: 4520
Joined: Mon Apr 24, 2017 9:23 pm
Has thanked: 1085 times
Been thanked: 2358 times

Re: Rattly GMP mystery solved -what is this bit and do I need it?

Post by Easylife » Tue Mar 05, 2019 10:40 am

There should be holes where those two pegs located. A bit odd having brand name where it would not normally be seen though? x;
Is this your weight saving ploy, what bit is next to go? :))
Nox 800, 15" coil & Garrett carrot.
White's TDI SL

User avatar
Lowland
Posts: 5360
Joined: Wed Mar 29, 2017 9:18 am
Location: scottish middle march
Has thanked: 5907 times
Been thanked: 2895 times
Contact:

Re: Rattly GMP mystery solved -what is this bit and do I need it?

Post by Lowland » Tue Mar 05, 2019 10:43 am

Easylife wrote:
Tue Mar 05, 2019 10:40 am
There should be holes where those two pegs located. A bit odd having brand name where it would not normally be seen though? x;
Hi easylife,
One of the pegs has a tiny thin wire attached,
To be honest doing stuff like this gives me the sweats!
I put it back together rapido.
I should go back in and have a proper look-
You’re right it will be obvious where it attached ;))
‘Twas quite a scene,kinda like defusing a bomb.
Shiny equinox600- taped up spade-dodgy elbow
.....................deeper bliss......................

User avatar
Lowland
Posts: 5360
Joined: Wed Mar 29, 2017 9:18 am
Location: scottish middle march
Has thanked: 5907 times
Been thanked: 2895 times
Contact:

Re: Rattly GMP mystery solved -what is this bit and do I need it?

Post by Lowland » Tue Mar 05, 2019 10:46 am

Easylife wrote:
Tue Mar 05, 2019 10:40 am
There should be holes where those two pegs located. A bit odd having brand name where it would not normally be seen though? x;
Is this your weight saving ploy, what bit is next to go? :))
:D as for weight saving -pah!
I’m going to put the top mounting bracket on for the control box.
Sick of it getting put down on the box every time I go to dig a hole.
Problem is it needs a counterbalance at the back,
Feels like wielding a minesweeper.
::g
Scratch top mounting the box,could feel my arm hurting after a tour of the garden!
Shiny equinox600- taped up spade-dodgy elbow
.....................deeper bliss......................

Ten pence!
Posts: 1145
Joined: Mon Dec 09, 2013 10:42 pm
Has thanked: 262 times
Been thanked: 293 times

Re: Rattly GMP mystery partly solved -what is this bit and do I need it?

Post by Ten pence! » Tue Mar 05, 2019 12:21 pm

Lowland wrote:
Tue Mar 05, 2019 10:24 am
Morning-the devil makes work for idle hands :D
So ,bored this morning and decided to apply minimal technical skill to solve
My rattly GMP.
(Littleboot thinks I’m subconsciously trying to break it so I can get an equinox B-) )
Here’s the story,
Plasticky rattling noise from something adrift inside the GMP control box
Was starting to bug me,didn’t seem to affect its operation but was annoying.
So loosened the four tiny screws in the corners of the control fascia
(Watch out for the little nuts falling out and disappearing)
Undid the large nut at the back where the coil lead plugs in.
The circuit board slides out the housing.
And there was the problem-the piece of plastic seen in the photos was just floating about.

If anybody knows what it is and what it does ,would be useful info ::g

It’s back together now and starts up and works fine.

On a happy note I did spot a v4 chip-which means I could go wireless?
Thanks for having a look
No idea what that is! As for wireless operation you may have noticed a toggle switch on the front of the unit marked Frequency shift, this is also the bit that switches the internal headphone transmitter on and off!

User avatar
Lowland
Posts: 5360
Joined: Wed Mar 29, 2017 9:18 am
Location: scottish middle march
Has thanked: 5907 times
Been thanked: 2895 times
Contact:

Re: Rattly GMP mystery partly solved -what is this bit and do I need it?

Post by Lowland » Tue Mar 05, 2019 12:26 pm

Ten pence! wrote:
Tue Mar 05, 2019 12:21 pm
Lowland wrote:
Tue Mar 05, 2019 10:24 am
Morning-the devil makes work for idle hands :D
So ,bored this morning and decided to apply minimal technical skill to solve
My rattly GMP.
(Littleboot thinks I’m subconsciously trying to break it so I can get an equinox B-) )
Here’s the story,
Plasticky rattling noise from something adrift inside the GMP control box
Was starting to bug me,didn’t seem to affect its operation but was annoying.
So loosened the four tiny screws in the corners of the control fascia
(Watch out for the little nuts falling out and disappearing)
Undid the large nut at the back where the coil lead plugs in.
The circuit board slides out the housing.
And there was the problem-the piece of plastic seen in the photos was just floating about.

If anybody knows what it is and what it does ,would be useful info ::g

It’s back together now and starts up and works fine.

On a happy note I did spot a v4 chip-which means I could go wireless?
Thanks for having a look
No idea what that is! As for wireless operation you may have noticed a toggle switch on the front of the unit marked Frequency shift, this is also the bit that switches the internal headphone transmitter on and off!
:)) aha!
Always ignored that-I reckon I shld stick with a GMP,
Equinox might blow my circuits ::g
Ta tenpencej
Shiny equinox600- taped up spade-dodgy elbow
.....................deeper bliss......................

Bootneck45RM
Posts: 153
Joined: Fri Dec 08, 2017 3:37 pm
Location: Exminster nr. Exeter devon
Has thanked: 143 times
Been thanked: 130 times

Re: Rattly GMP mystery partly solved -what is this bit and do I need it?

Post by Bootneck45RM » Tue Mar 05, 2019 4:39 pm

🤨🤔😤😭😡💣💥🤢🤕😇 put the wire back quick !!!

Just a thought could it be part of a (broke) spring tensioner to stop something rattling?🤔
Last edited by Bootneck45RM on Tue Mar 05, 2019 4:55 pm, edited 1 time in total.

User avatar
fred
Posts: 9254
Joined: Wed Dec 10, 2014 6:15 pm
Location: Kent
Has thanked: 1899 times
Been thanked: 5093 times

Re: Rattly GMP mystery partly solved -what is this bit and do I need it?

Post by fred » Tue Mar 05, 2019 4:43 pm

That little wire looks like some kind of earth! Sort of strange as plastic can't be earthed to and doesn't usually need earthing. :D
Equinox 800 x2

Fusion
Posts: 4620
Joined: Thu Sep 16, 2010 11:47 am
Location: Herts
Has thanked: 2 times
Been thanked: 339 times

Re: Rattly GMP mystery partly solved -what is this bit and do I need it?

Post by Fusion » Tue Mar 05, 2019 5:05 pm

It's made of electrically-conductive plastic, and it's purpose is to (partially) shield the sensitive bit of the electronics from interference. It's supposed to make connection simply via the two mounting pegs, but it evidently doesn't work right, as XP bodge it with a bit of copper wire. The wire should make contact with the tinned-copper around the mounting hole.
:(

User avatar
fred
Posts: 9254
Joined: Wed Dec 10, 2014 6:15 pm
Location: Kent
Has thanked: 1899 times
Been thanked: 5093 times

Re: Rattly GMP mystery partly solved -what is this bit and do I need it?

Post by fred » Tue Mar 05, 2019 5:23 pm

Fusion wrote:
Tue Mar 05, 2019 5:05 pm
It's made of electrically-conductive plastic, and it's purpose is to (partially) shield the sensitive bit of the electronics from interference. It's supposed to make connection simply via the two mounting pegs, but it evidently doesn't work right, as XP bodge it with a bit of copper wire. The wire should make contact with the tinned-copper around the mounting hole.

Well it certainly didn't protect it very well from some Scottish themed interference! :D
Equinox 800 x2

User avatar
Lowland
Posts: 5360
Joined: Wed Mar 29, 2017 9:18 am
Location: scottish middle march
Has thanked: 5907 times
Been thanked: 2895 times
Contact:

Re: Rattly GMP mystery partly solved -what is this bit and do I need it?

Post by Lowland » Tue Mar 05, 2019 5:36 pm

Fusion wrote:
Tue Mar 05, 2019 5:05 pm
It's made of electrically-conductive plastic, and it's purpose is to (partially) shield the sensitive bit of the electronics from interference. It's supposed to make connection simply via the two mounting pegs, but it evidently doesn't work right, as XP bodge it with a bit of copper wire. The wire should make contact with the tinned-copper around the mounting hole.
Thanks fusion,it's been rattling about for about a month.
If I'm feeling technical tonight do you think it's worth having it put back in place?
Cheers :( ::g
Shiny equinox600- taped up spade-dodgy elbow
.....................deeper bliss......................

User avatar
Lowland
Posts: 5360
Joined: Wed Mar 29, 2017 9:18 am
Location: scottish middle march
Has thanked: 5907 times
Been thanked: 2895 times
Contact:

Re: Rattly GMP mystery partly solved -what is this bit and do I need it?

Post by Lowland » Tue Mar 05, 2019 5:38 pm

fred wrote:
Tue Mar 05, 2019 5:23 pm
Fusion wrote:
Tue Mar 05, 2019 5:05 pm
It's made of electrically-conductive plastic, and it's purpose is to (partially) shield the sensitive bit of the electronics from interference. It's supposed to make connection simply via the two mounting pegs, but it evidently doesn't work right, as XP bodge it with a bit of copper wire. The wire should make contact with the tinned-copper around the mounting hole.

Well it certainly didn't protect it very well from some Scottish themed interference! :D
Scottish themed interference :))
Shiny equinox600- taped up spade-dodgy elbow
.....................deeper bliss......................

User avatar
Lowland
Posts: 5360
Joined: Wed Mar 29, 2017 9:18 am
Location: scottish middle march
Has thanked: 5907 times
Been thanked: 2895 times
Contact:

Re: Rattly GMP mystery partly solved -what is this bit and do I need it?

Post by Lowland » Tue Mar 05, 2019 5:40 pm

Bootneck45RM wrote:
Tue Mar 05, 2019 4:39 pm
🤨🤔😤😭😡💣💥🤢🤕😇 put the wire back quick !!!

Just a thought could it be part of a (broke) spring tensioner to stop something rattling?🤔
Hi bootneck-scary enough taking it out-if the better half sees me 'doing' electrical type manoevers
I will have to mend plugs and all sorts.
::g
Shiny equinox600- taped up spade-dodgy elbow
.....................deeper bliss......................

Fusion
Posts: 4620
Joined: Thu Sep 16, 2010 11:47 am
Location: Herts
Has thanked: 2 times
Been thanked: 339 times

Re: Rattly GMP mystery partly solved -what is this bit and do I need it?

Post by Fusion » Tue Mar 05, 2019 5:48 pm

I think it should be put back properly. But it looks like a peg has broken off? So you're going to have to be creative ... could you drill out the pillars and tap them with an M3 thread, then insert an M3 bolt from below the PCB ? Or do you like melting plastic ? Trim a bit of plastic off the edge of the flat area and get messy with a soldering iron?
:(

Bootneck45RM
Posts: 153
Joined: Fri Dec 08, 2017 3:37 pm
Location: Exminster nr. Exeter devon
Has thanked: 143 times
Been thanked: 130 times

Re: Rattly GMP mystery partly solved -what is this bit and do I need it?

Post by Bootneck45RM » Tue Mar 05, 2019 6:04 pm

Hey Lowland,
I've made that mistake, just cos I wash the car, my better half reckons I'm fully qualified for dishes - I've tried arguing the point but to no avail.
Much impressed by Fusion's knowledge - good luck with it.😀👍

User avatar
Lowland
Posts: 5360
Joined: Wed Mar 29, 2017 9:18 am
Location: scottish middle march
Has thanked: 5907 times
Been thanked: 2895 times
Contact:

Re: Rattly GMP mystery partly solved -what is this bit and do I need it?

Post by Lowland » Tue Mar 05, 2019 6:40 pm

Fusion wrote:
Tue Mar 05, 2019 5:48 pm
I think it should be put back properly. But it looks like a peg has broken off? So you're going to have to be creative ... could you drill out the pillars and tap them with an M3 thread, then insert an M3 bolt from below the PCB ? Or do you like melting plastic ? Trim a bit of plastic off the edge of the flat area and get messy with a soldering iron?
Only one more question,where did I put it?
Seriously though ,thanks a lot for the good advice ::g
Cheers
Shiny equinox600- taped up spade-dodgy elbow
.....................deeper bliss......................

Post Reply

Return to “XP Gold MAXX Power Forum”