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**Qiaozhi** · 12-02-2014, 09:35 AM

Originally posted by Henrikras View Post

There is warranty and I should send. But - The reason to ask you some good adwise and ask fore help, is that the shipping is Very exspensive (100-150$ one way) to send the Detector to Whites from my home, and I was told by Whites customer service that I have to pay the return shipping. Because of that I was ready to try my self to find the failure and make it working. (Give up the warranty)...

Any help would be nice....

Thanks.
Henrik.

Whites have a UK factory at Inverness. That's a lot closer than sending the detector back to the USA.
http://www.whites.co.uk/info/service.html

**greylourie** · 12-02-2014, 10:23 AM

Hi Henrik,

Maybe you could remove the box from the stem. Surely it would be cheaper for you to send just the control box.

Have you tested performance on your gold ring with GB off / Target Conductivity all ? Be interesting to see.

With a brand new detector, the last thing anyone would want to do is open it up. But with you so far away from your supplier or Whites workshop, it is understandable that you are keen to see if there is a simple fix.
With the more recent versions of the TDI family, some of the controls are connected to the pcb via top mounted fittings. Though I have no idea whether your Power off connections are on the top or bottom of pcb. Or if it is soldered or a connector.

Here is a photo I found on the internet of the bottom of a TDI (Pro).

The latest SL variant appears to have connections on the top. (and possible future features like Grab and GB Auto/Lock ! There are unpopulated connections for those.

)

Maybe Reg or someone who has done work on this model can offer you some advice on things to check without affecting your warranty. You could possibly get hold of Reg or Zuke_Lynzy. See : https://www.prospectingaustralia.com...orum.php?id=35
Very friendly and helpful people over there.

**Henrikras** · 12-02-2014, 11:46 AM

Thank you so much..
1. The TDI PRO isn't sold in UK, Thats one reason to buy it in US. So I dont think they can help. I allso would say that customer service should had said that option.
2. I will try some more test this evening... Thanks for the good idea to try in all metal with the GB off.
3. I dont like to open it, before I deside yes or no to use the warranty, because I dont think it can be done with out you can see its been opend up.

**Qiaozhi** · 12-02-2014, 11:54 AM

Originally posted by Henrikras View Post

Thank you so much..
1. The TDI PRO isn't sold in UK, Thats one reason to buy it in US. So I dont think they can help. I allso would say that customer service should had said that option.
2. I will try some more test this evening... Thanks for the good idea to try in all metal with the GB off.
3. I dont like to open it, before I deside yes or no to use the warranty, because I dont think it can be done with out you can see its been opend up.

Why not contact them and ask?
They do sell the TDI SL, so there's a chance they can fix it.
http://www.whites.co.uk/tdisl.html

**muddy fingers** · 12-02-2014, 01:56 PM

Qiaozhi is right- there are dealers here in England that sell the Whites TDI SL PRO so Whites in Inverness must attend to any of their machines that need repair. I would just send them the box back if possible, but contact them first.

**Henrikras** · 12-02-2014, 08:45 PM

Just made all the indoor test I could think of and I came to the conclusion that my TDI PRO properly is working perfect..

Okay the On/off isn't working, but that can be made.
Concerning the sens., I have to admit that I made two Big errors.
1. In all this VLF work I was sure that a goldenring had high conductivity because of the round sharpe, it has not at this TDI..
Gold is Gold and low conducted ( newbie failure ).
2. still to much VLF motion Detector working with DD coils. This type of coil my TDI came with only got a Very small spot were the signal is.. (Mono 12"), and I was swinging the target to fast over the coil. I should had done the swinging slow in the centre of the coil.
So I found out this; in all metal perfect sens. at all type of targets...(Golden mans ring and I got 13" and a good clear signal)
Gain 50% at all my test.
Same golden Ring and same settings, now GB fine ON and switch in low conducted 10 us delay, it came out at 11" and a clear signal. (2" less)
Then I made same test with a silvercoin, similar to a Roman (3 gram) and in all metal and I got 9"..Still with GAIN 50%.
(That isn't so bad) - then same coin with GB fine on and switch in high con. and delay at 25us, then this coin gave a clear signal a 7" (again 2" less).
The results is that in all metal NO problems, but in disc. High or Low conducted I got a little less...
But I would think this is normal. Don't you ?
Remember this is a indoor test and can only be a guiden...
Thanks to you, I got great help and now next step is; do I send the control unit to Whites UK service centre and get the on/off switch made or do I open it up my self and do it ! Henrik here need a good night sleep to deside that.
Once more "THANK YOU".

**Carl-NC** · 12-02-2014, 08:52 PM

If I recall, the TDI Pro uses the same PCB as the TDI SL. (I should know since I designed them both, but I just don't recall.) The 'Pro on/off switch controls a FET switch, so it could be that the FET switch is shorted out and won't turn off.

**Henrikras** · 12-02-2014, 09:28 PM

Thanks Carl.... One good reason to use the warranty.

**Henrikras** · 12-03-2014, 04:59 PM

Great service at Whites UK - email them and one hour later answer. They will help me out.
Thank you all, your help did it.
Henrik

**Henrikras** · 12-13-2014, 08:07 PM

Update.. The controlbox is now at Whites in Scotland.
fingers crossed.

**DOOLEY** · 12-14-2014, 11:22 AM

well done on the quick response from whites uk henrikras,

ive emailed whites in inverness Scotland 3 times over the last 3 weeks or so
and have yet to get a reply !!!

it was regarding the 3 piece space saver shaft kit mentioned on another thread,
maybe they only reply to requests they can help with.........

**Orbit** · 12-14-2014, 02:04 PM

Reason errors this table customers pi such as TDI usually think that discrimination should work at VLF detectors .

**greylourie** · 12-14-2014, 06:37 PM

Maybe a request like that is filtered. A warranty inquiry has to be replied to.
Maybe give them a ring.

**greylourie** · 12-14-2014, 07:16 PM

Originally posted by Orbit View Post

Reason errors this table customers pi such as TDI usually think that discrimination should work at VLF detectors .

Hello Nenad

The TDI features are for advanced users. It can be possible to discriminate. Come to think of it, even watching some Garrett ATX Pro videos, you could be fooled into thinking it is a Goldscan in disguise - with a digital interface.

But you are right. VLF/PI. Different animals.

TDI pulse induction = time domain instrument = P.I. VLF= frequency domain.

Reg has given many good examples. A nice bit of work here :
http://www.findmall.com/read.php?73,1910809

And described also at the following threads :

http://forums.whiteselectronics.com/...lance-%28GB%29

http://forums.whiteselectronics.com/...l=1#post934352

https://www.prospectingaustralia.com...111800#p111800

And here is a video by Reg showing the basic discrimination features : http://youtu.be/7ibDh4k-DuY

TDI is a pretty amazing machine.

Announcement

WHITES TDI PRO help please.

WHITES TDI PRO help please.

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