Garrett A.D.S. VLF/TR deepseeker with bad sound output???

[Gold dredger]

Ok I am not the sharpest when it comes to this I am learning allot. However I have tesed around and I cant seem to find any AC voltage on the audio side. I can get DC everywhere. I can't get any sound but the pop in the circuit. I have found that several of the diodes go up and down by about three volts when waving a target over the coil but the voltage on the audio output to speaker headphones only reads .03 to .08 when waving the target over coil.
Sorry I don't know more here.

[homefire]

I just looked at mine and I have the Same one.


Worst come to Worst I can open mine and I really don't want to.

[Gold dredger]

No don't open yours. If i can't sort it out I will see what Garret gets to fix it. I shot them an e-mail. I guess they still work on these things. I was just hoping as simple as it is that I could nail it myself and save a few bucks. I wish I had learned more about electronics as a kid.

[Gold dredger]

homefire,
When you turn yours on do you get a beep then a thresh hold? And when you scan a target what tones do you get?

[homefire]

Nothing until I turn the volume up.

Have tried to adjust the Treahold pot?

[conan]

In The first photo can you tell the sequence wires in the plug to the batteries

[quote=Gold dredger;100189]Ok here is the pics This is the Master Hunter ADS deepseeker model.


[I have the same one trying to figure out the power supply wiring but i did not know that it took 36 volts on 1 and 9volts on 2 can you show o tell me the wiring colors starting from orange .in the six female connector is it 1/none2/orange3/black4/none5/brown6/red.That will be orange(negative)and brown(positive)total 9volts for sound on number 2 batteries.And black(negative) and red(positive) total 36volts for circuit on 1 batteries.By the way I fixed a similar problem that you have and the transistor NSDU45 was the problem.

[Gold dredger]

Hi,
I will pop it open tonight and see if I can get you some clear pics of the power plug for you. I will check the transistor NSDU45 and replace it to see it I get my sound back. It is still dead. I have not been able to sort it out.

[Gold dredger]

I found the NSDU45 thanks. I will post the pics of the power plug shortly.

[homefire]

What A Hoot!

My Garrett S3 sound just took a ****. I was trying to replace the head phone jack and shorted it out.

There is only three componits that are comon.

NSDU-45, 2n3906 and the LM358.

The replacement transistor is listed at $45.00... Original is unavailbel and needs to be subbed. But!

I think the one that did the TIts up is a NSDU-45

NSDU-45 on replacement can be replaced by NTE-272. $45.00..

OR you can get it from this guy for $2.75

Part Number TRN-CENU45 @

He Takes cash or PayPal.

I just ordered two.

Have a Good Day, I just did!



This part is used in Pin Ball machine too!

What a Hoot!

http://bigdaddy-enterprises.com/index.htm

[Gold dredger]

Ok here is the pics of the bottom and top of the power supply and plugs with the board sitting as it would be plugged into the detector. Hope this helps you out.

[Gold dredger]

What A Hoot!

My Garrett S3 sound just took a ****. I was trying to replace the head phone jack and shorted it out.

There is only three componits that are comon.

NSDU-45, 2n3906 and the LM358.

The replacement transistor is listed at $45.00... Original is unavailbel and needs to be subbed. But!

I think the one that did the TIts up is a NSDU-45

NSDU-45 on replacement can be replaced by NTE-272. $45.00..

OR you can get it from this guy for $2.75

Part Number TRN-CENU45 @

He Takes cash or PayPal.

I just ordered two.

Have a Good Day, I just did!



This part is used in Pin Ball machine too!

What a Hoot!

http://bigdaddy-enterprises.com/index.htm

Thanks for the link. I hope this part fixes my Garret it sure would be cool to get this classic back in working order.
I also found this link and they have lots of garret parts including the NSDU 45 for $2.00 at the bottom of the page. But they are in Australia.

[homefire]

I ordered two from Big Daddy and shipping is only 3.00$

If you have any probems, contact me. I have one too!

[Gold dredger]

I ordered two from Big Daddy and shipping is only 3.00$

If you have any probems, contact me. I have one too!

Very cool.
I am trying to find them on the big daddy site now.

[homefire]

Look for CENU45 ..

[conan]

GARRETT DEEPSEEKER ADS

Thank you for your quick response now I got the right wiring.That's amazing close ups,what are you using Gold dredge to get such a good quality focus I can almost check your NSDU45 transistor from here AUSTRALIA .Practical way is from the Emitter to Collector is high resistance both ways (by changing polarity)and from Base to Emitter and Collector depending on the NPN or PNP of the transistor is low resistance.Yes now by your photos starting from wire in plug RED(+) being number 1 and BROWN(+) number 2 then NIL on number 3 then BLACK(- )number 4 and ORANGE(-) number 5 and NIL for number 6.We have(1) Red+ and (4) Black give you 36volts for the circuit and (2)Brown+ and (5) Orange- give you 9volts for the sound and that's what the schematics say.But make sure you put the plug back the way you have it.Because you can plug the other way and get 9volts for the sound but the polarity will be wrong.I'm checking mine a friend gave me and all the transistors give o.k checks diodes the same .Even now that thanks to homefire for the schematics. The three voltage check points the 15volts the 7.5volts and 6.2volts across the diode all check o.k.I Wish there was more.Going to the I.C's but they are very tedious to remove(and tip I put I.C sockets good machine ones for a $1 when I remove them so you can change them after with out having to solder any more) and only have one LM358 and CA3290 and MC14011 and the one mounted on the small circuit board CA3160 that has the hard gel all over the little board.Maybe it's bad luck and I'll find the culprit last,if anyone has any ideas who is the culprit this one is giving me a hard time and the only thing working is the battery 1 and 2 check.THANK YOU GOLD DREDGER FOR YOUR PHOTOS AND HOMEFIRE FOR THE SCHEMATICS.