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- เผยแพร่เมื่อ 21 ก.ย. 2024
- Teardown Tuesday
What's inside a Wellon Universal programmer.
Is it completely "universal"?
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A phone system device like that very well might have a blank EPROM if it's used to record a greeting. A lot of people don't know this, but EEPROMs can be used to record analog audio in digital answering machines and the like (not always a 1 or 0). I assume it works for EPROMs too.
surely a static discharge couldn't burn a hole through the device.
If your into arcade collecting a programmer is a absolute necessity right next to a multimeter.
OhNoNotMyPenisAt this point most of those suicide boards have fixes to them to reboot them yourself. I have the biggest cps2 collection in the arcade collecting scene and this isn't a issue for me.
I just recently bought a smartpro 5000u universal programmer, best feature is being able to program my devices directly from the device without needing a PC
I've got an TL866CS and he is awesome!
u the best online man a natural teacher
I use one of these daily, a VP-390 which is very similar to your unit. I find them extremely useful and reliable and most importantly for me, USB powered when programming low voltage devices. They're cheap but thanks to what I'm assuming is intelligent design they support 95% of the chips used in automotive applications, anything it doesn't support I have access to a production line with a programmer I can "borrow" for limited periods of time. I've used several other programmers but the Wellon line has one major advantage over the other low-cost "universal" programmers - It has an adjustable VCC in software, which is a boon to the automotive sector as eeproms are often write protected or a pin pulled low by a microcontroller to prevent reading/writing of raw data as a form of obfuscation. Being able to lower the voltage to the point the eeprom just works but the microcontroller doesn't wake up is god damn handy.
A hole burned in the ARM chip, now that's bricked! Maybe the voltage when flashing it went haywire?
Correct, they are BAV70's. I missed the silkscreen. So even less flexible than I mentioned!
We'll wait and see what he will do. I just assumed it was a hole burnt through the package of the device. You know, when you power an IC with too much voltage with a bit more than average supply of current.. Or it was shorted..
If they want it back to swap it out, write the ARM CPU on a sticky label and attach it to the CPU.
~19:30, Those might be (dual) diodes. They seem to be marked "DDxx" on the silkscreen. Might make sense,as signal steering diodes or something. All of the (other) transistors appear to be marked "Qx". I dunno,the silkscreen is kinda funky in places.
JTAG most likely. If you have a computer with a parallel port, you can build a simple JTAG adaptor for a few bucks. (7400 series buffer + a few discreets)
Gotta love it when they try to sand down the part number but do a half-baked job, allowing you to still read the part number!
I had a cheap-ass Ethernet/USB cable tester, where they sanded down the part number for a damn decade counter. I was able to read the writing after letting a thin coat of rubbing alcohol evaporate.
"Magic spit" is high end stuff! Loved it!
Pretty amazed Dave didn't see the blowhole in the ARM chip!
+Aurelius R Ur right, there is a hole in the plastic casing, probably from them pushing too hard when scraping the code off and puncturing the plastic? Maybe thats why it wasn't working properly
Anthony Quigley No, a blowhole is exactly that: a current spike interally blew a hole out of the casing. I've had it happen before.
How the hell did he not feel it when rubbing spit all over it?
18:56 DD means dual diode. They are BAV70 Dual Diodes (A4W).
What do I win? A do-over?
Hah! The point when you found it was blank really made me chuckle. Thanks :D
1. Prevent competitors from copying design, 2. Force customers to purchase repair parts from mfgr. 3. Force customers to return equipment to mfgr for repairs. Alternative is labelling parts with unique numbers to hide identity. Motorola is notorious for this.
No luck yet. Waiting on a Wellon response.
Standard EPROM's don't have copy protection.
I am new here but I like to add a comment. I like your tutorials and reviews etc. I am also electronics technician. I saw your first video. I remember it was about the capacitors testing on the power supply board of LG monitor using ESR tester.
Hi Dave, I am a big fan of you
You actually made a new age of electronics lectures
You made us love electronics more than ever and seeing it in a different prospect:)
However, if you need a perfect universal programmer try BK Precision 866B
It can program at least 43000 device and it is of course updatable
I am using it from 2006 and it is still working great
Keep on dude
To make it harder to reverse engineer. Thousands of hours at the factory scrubbing out numbers to add maybe an extra 10 minutes to a cloners time - yeah, makes sense! :->
Yeah, and that bloody broke it!
"datashit" Beautifully succinct description! :)
People in the art or document restoration business sometimes use cameras that use other parts of the electromagnetic spectrum, like infra-red, to show details that would otherwise be hidden. They use other techniques like adjusting contrast, as Dave did, as well. You might like to look into that side of things.
Hmm. You NEVER need a true universal prog. Firstly manufacturers do get together and decide pin functionality. Devices are often made to similar pin-outs so existing progs can be used (helps sell device). Secondly if you do work with some really odd custom chip its easy enough 2 make an adaptor for the ZIF socket to make the pin-out something familiar. Some co's do this anyway, scramble the data and address lines in design and with adaptor to frustrate reverse engineering. I used to!
This is top of my list too.
Dave needs a universal programmer to fix the bricked universal programmer?
Generally is that the way to fix bricked devices, bypassing the boot loader and
flashing the micro/ eeprom ect directly? Could be a good tutorial.
Don't know, have asked them, but no response yet.
That ST micro looks like its got a spot where the magic smoke has came out, its around where the manufacture 'tried' to scrub it the numbers off..
Hi Dave! Would you really be able to read that program from the Intel chip if they set up copy protection? Maybe it is supposed to come up blank?
Yes. The factory was just saving the additional time and expense of doing so. Removing the flux would have been a better thing to do than pointlessly scrub the code from the ARM chip!
Lol at the missing nut :P such a fail. The reflow on the PCB looks really poor too, could be the flux but I thought I saw some shorts. Maybe the reason for the incorrect reading?
I've found hidden messages in various vintage computers including the acorn electron and spectrum +3 but reading the chips out of the system makes it too easy sometimes.
It will (VP-590) read/write 2708 2716 up to Vpp=25V, except 2708JL and 2716JL unfortunately; which i badly needed to read/copy last time.
Aww :( I would have loved to see whats on that EPROM.
I'd like to hear how the attempts at firmware recovery went. Did you manage to get the programmer working again? Any chance of video?
Excellent product, excellent review, would be good to tear down an old programmer with the ultraviolet light... :-) Anyway, keep it up mate!
I use this at work, this is relevant to my interests :D
Right about here 0:00
That's what that sound is :)
oh hell, i love those universal.... uh.... programmers
I'd say if you want a good universal programmer that isn't too expensive I'd go for a GQ-2X. They start at US$99 and can read/write chips that most other programmers wouldn't be able to. And it's made in Canada.
IT ALL BURNS WITH FIRE. Stress all gone. :)
Beautiful Z80 Code in the eprom, the goldstar Z8400 is a z80 clone.
Can you post the 32k code Dave?
Thanks.
I guess his ARM has a hole in the middle.
The magic spit! It really worked! :)
try putting it into recovery mode with the jumper and see if its detected by the pc. if it is, than all good update the firmware flip the jumper back and it will be working again. if not i dont know and it will prob involve a jtag solution
Doh,Just posted a similar comment..didn't see this one.
Was thinking of getting an EPROM programmer that can sort the 25 series EPROMS (I normally deal with 27 / 27c's in slot machines..... the 25's are common in some early MPU driven based machines, like JPM's SRU and sys80), which my current mcumall gq-4x true usb programmer can not do (Dam reliable and cost effective programmer this), but seeing that bullet hole in one of it's CPU's, think I will give this one a miss.
What's with the "Universal......... Programmer"?
You cant reprogram the flash on the ARM chip via the jTag? I have managed to unbrick a few routers that way :)
no idea what you were talking about but it looked interesting :)
this thing would be the best thing to save mobos that have bad bios
I do it all the time. It just means you're a genius. ;)
That dark dot on the scubbed out BGA looks likes it burned out.. or not?
I own two of the PowerShield Commander 2000VA UPS System, and one of them has a blown IC Chip and the other one is working fine.
Can I copy the Data from the old IC Chip that still works? and can I Transfer Data over to the new blank IC Chip? which is: UW-504PBF DIP28.
They are programmed for this IC Control Chip for the Power Shield Commander 2000VA UPS System, and they are useless if I'm not able to program the new IC Chip. Because I'm not too sure if they're already being programmed or not?
i used to use one called willem programmer some year ago. for repair bad bios.
Have you heard of this new Cube 3D printer Dave?
@eevblog I bought into an even cheaper one. Works a treat but doesn't support 64bit at all forcing me to use it with the netbook. Can you recommend a cheap one that does?
hello how do i get into service menu with universal programmer?. thanks
No, I don't, because it does not work any more :-(
What is that hole in arm chip?
Does the Wellon have any jtag recovery software or can you upload the hex image firmware through the jtag connector with arm programmer instead of usb? I don't know, never dealt with one of these.
Wonder if it will programme 2708s. Tricky buggers those things are.
did it come with a nice firecracker powersupply?
maybe that has failed?
Oh please make a review of the Extech MC108
What's with the noise at 0:00
what is the reason they are ripping of the number of the chips?
Is there a way to set up copy protection without an additional IC?
I want to see the apple vs china wall sockets tear down.
Are they as good quality or bad for your iDevice?
All those chunky chips, whats inside them? they just look like lumps of light hard plastic, unlike CPU die's which look cool, if you cut one in half across ways, what would be inside that EPRom?
Hahaha people havent seen other chips then cpu's
Hey Dave! just got a request from Norway, and that is if you would make a video on different solenoids, how they work, types and what they can be used for. etc
Keep the magic teardown's and all of your other content rolling out on cyberspace! i love it ;D
-Mathias
hahaha "magic spit"
04:26 telephone in the background?
Why just 10 minutes? I usually spend a lot of time to find out real chip name on scrubbed chips or chips with custom rebranded names.
Furthermore, I want to make own web-service to let everyone find any chips by footprint/pinout masks. Because as far as I know there are no such website at this time. That is, in fact, a bit complicated task: creating of unversal datashit grabber/analyzer.:)
yes, just get some professional car ecu chip
Where can I get some of that Magic Spit™?
Great vid =D
Magic spit ftw =P
Why exactly do they etch away the model number?
I started with a ebay cheapy but they all have bad software compared to a Galep-5 programmer that cost $555. It even runs a open source Linux firmware so its really hackable.
Is there a real universal programmer?
IngenieroCristian I really need that programing machine
I was wondering the same thing
Magic spit!!! How comes I didn't know it!!! :-(
It's not worth it, it's expensive and not very useful. Only good for IC numbers really.
Magic spit will reveal all
Can you clean the crud off?
It's not hate. It's just the truth. Sadly many Chinese companies output sub-par poor quality or counterfeit products. with poor safety tolerances Just so happens that Wellon isn't one of those companies. No hate intended.
thing's worth $200 and bricked from a firmware update
No, I'm simply stating it like it is. The big and reputable universal programmer manufacturers are mostly NOT Chinese companies (although the products may be made in china). That's a fact. As is the fact that a lot of crap universal programmers come from Chinese companies. Wellon seems to be better of the bunch.
Maybe an idea to look at the ones from Mcumall, especially the gq-4x true usb programmer..... However, I would advise going to Mcumall's site, and use the official local distro agent for where you are (C.U.S in the UK), due to the amount of dodgy knockoff's E-bay has. The one I have, had it for about 4 years, and never let me down yet. Granted, be nice to afford something like a Stag or Dataman, but the buggers are not cheap at all.
There are lots of flux residue that cause the failure when the product has reach the market in long run. It has cause noise on d signal and board will rust away after years. Bad manufacturing process.
ChipProg481
Beauty 😅
Lobotomy scar.
The soldering here is terrible... China products really rocks :D
seems plausible.
8:24 OH FFFFFFFFFFFFFF..........
passado cuspe
Hahaha :D
Hello Bro before couple day i had a wimax modem device i uploaded hd pictures
front look : www.googledrive.eb2a.com/1.jpg
Back look:www.googledrive.eb2a.com/2.jpg
ITEM:INTERNET MODEM
MODEL-SWU-9000
WIMAX MODEM (they call it MIFI)
and by the way i can login using telnet because it's turned on even the login of admin is accessible
www.googledrive.eb2a.com/3.PNG
and i can't Do any Thing with it because it isn't root I've test many passwords with no avail
i will apply any suggestions and would like to know on which pins should i attach the multi mater
Thanks for Your useful videos
Datashit?