XP deus coil damaged by salt water

[kt315]

pics http://www.md4u.ru/viewtopic.php?f=94&t=9136

[sled]

I think I was able to identify another IC: D0B = AD5160 = 256-Position SPI-Compatible Digital Potentiometer (Datasheet)

Marked the other ICs with what I was able to decipher...

[sled]

FCC-ID info about both Deus and Pinpointer MI-6: https://fccid.io/XFJ (scroll down to "FCC ID applications by XFJ (XPLORER)" section and then follow the links)

[sled]

Battery IC identified, it's Semtech Miniature High Current Lithium-Ion Battery Charger SC806 (Datasheet) same is used in the Headphones.

[sled]

I think I identified another one, the "D?0" is actually "Dt0" and is a NXP "PEMD10; PUMD10NPN/PNP resistor-equipped transistors;R1 = 2.2 kOhm, R2 = 47 kOhm" (Datasheet). The "t" is the manufacturing plant in Malaysia from NXP.

[sled]

In this picture here I identified Littlefuse Zener Diode ZEN056V230A16LS (Datasheet)

[sled]

What I'm missing is, where is the DAC or power amplifer / mosfets to drive TX?

[Skippy]

I suspect you're over-thinking the DAC / power mosfet part of the circuitry. The power levels used are very low; in Henrik's small-coil thread we reverse-engineered it enough to see there was no fancy tricks to get more 'power' to the coil, despite just using a single Lithium cell. No tapped TX coil, no bridge drive, no double-tuned circuit. So it's almost certainly just one standard transistor in a SOT-23, driven with a square-wave from the PIC micro. It may even be possible the PIC could directly drive the coil, perhaps with two pins/ports paralleled together.

As we found out how easy Henrik's coil was to copy, we didn't bother over-analysing the drive circuitry, to see how the relays affected the tuning. I analysed the front-end amp, with a view to altering gains, but Henrik left it unchanged, it airtested OK as it was.

[sled]

I found the LDO! The AX? part is actually AXX and is Texas Instrument TPS799 (Datasheet) only 2 ICs left!!

[sinclairuser]

henrikas has a thread in the coils section that has loads of usefull info on deus coils he was building a small coil but his reverse engineering was really good, thankfully KT 315 has posted the link further up the thread, this is another detector that i'm suprised has not got more hacks and tweaks.
did anyone ever get deus firmware on that lower cost version that was white?, its name escapes me but it was a stripped down version of the deus, but side by side teardowns of that and the deus(youtube), looked more or less the same and its firmware was a "gimped" version of the deus, i wonder where that got or if it was a red herring, iv'e not seen any info since and wondered if someone here knew where that hack was going.

[Skippy]

You're referring to the Depar DPR600:
http://www.depardetector.com/product...pr-600/912/511

The hacking of the Deus is rather restricted because of the use of microprocessor(s) in it's design, much like many other good modern machines. I always thought the XP GoldMaxPower GMP would be worth reverse-engineering / copying / hacking, as it's clearly a competent machine, but with a very different design in its discrimination method. But again, there's a (fairly simple) micro doing a lot of the 'clever stuff'. There's also the 4.6KHz version, the GMaxx-2, which shows the basic design is adaptable.

[galushka]

Please help, nowhere can I find this chip

[galushka]

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[misyachniy]

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A3901 Allego microsystem?

[galushka]

Thanks for the help misyachniy the other day came the chip, is all perfectly working! A3901 exactly he!exactly heexactly heexactly heexactly heexactly heexactly heexactly heexactly heThanks for the help the other day came the chip is all perfectly working!