Weller WD1 Discussion and Repair

[Tatanka1961]

I get the firmware for the Weller WD2 (with PIC18f6622), so if anyone need it ask me.
With this and adding some components you can convert a WD1 into a WD2.

Hi,
I have both a WD1 and a WD1M
I would be very interested in converting 1 of them into a WD2(M). Preferably the M 
They do seem to have different PIC chips though: the WD1 has a PIC18f6622 while the WD1M has a Pic18f4620
Is it the difference between the normal and the 'M' or just a newer revision?
Also the 'power' boards are quite different.
Could anyone please provide the binary file for the WD2(M)?

The Microchip ICD can be soldered to the USB breakout PCB without any problems.
Could you please tell us how to connect it?

[z01z]

Is it the difference between the normal and the 'M' or just a newer revision?

You really should have read this topic, the answers are there:

I do believe, that you cannot modify a WD1/2 for the WMRP pencil. The WMRP pencil does use a K-type thermocouple, and not a NTC like in all the other stations.

I have a WD1M station, that I have taken apart to see how it works, similarly, i've taken an WD1 station apart to see, what the differences is.

There is no thermocouple-amplifier in the WD1/2 station, so it cannot read a thermocouple iron (e.g. WMRP)

So, it's not all up to software differences.

// Per.

Could anyone please provide the binary file for the WD2(M)?

It's also posted a few posts back.

[Tatanka1961]

You really should have read this topic, the answers are there:

I actually DID read the entire topic.  The difference you pointed out is between the WD and the M version.
I kinda figured out that it's not possible by just looking at the boards, but I don't want to convert a regular one into an M. I want to convert a 1 into a 2.

It's also posted a few posts back.

As you pointed out yourself:

Thanks for the effort, but the fw file you've posted is just a bunch of zeros. Maybe the PIC was protected?

So thanks for the comments, but not really helpful...   

[z01z]

I kinda figured out that it's not possible by just looking at the boards, but I don't want to convert a regular one into an M. I want to convert a 1 into a 2.

Yet what you wrote revolves around the M version, which is kind of misleading.

As you pointed out yourself:

Thanks for the effort, but the fw file you've posted is just a bunch of zeros. Maybe the PIC was protected?

You're right, looks like I should have better memory.

So thanks for the comments, but not really helpful...   

OK, to be a bit more helpful then.

You could duplicate the driver for the second channel, that doesn't look that bad.
You'd still need the firmware, the handset connector and possibly a new transformer.
If your goal is to not to swap handsets that often, you could keep the existing transformer, but it would still have a lower power output than a real WD2.
I'm not sure if you can get an original connector. There's a possible workaround, though it requires some mechanical work (the notch in the Amphenol connector is at a different position) , check this for the part number.
As for the firmware, the M version can be updated, there's a Weller program for that. Maybe the firmware can be extracted from it.

[Tatanka1961]

Yet what you wrote revolves around the M version, which is kind of misleading.

Yes, I can see how this might be confusing.

You could duplicate the driver for the second channel, that doesn't look that bad.
You'd still need the firmware, the handset connector and possibly a new transformer.
If your goal is to not to swap handsets that often, you could keep the existing transformer, but it would still have a lower power output than a real WD2.
I'm not sure if you can get an original connector. There's a possible workaround, though it requires some mechanical work (the notch in the Amphenol connector is at a different position) , check this for the part number.
As for the firmware, the M version can be updated, there's a Weller program for that. Maybe the firmware can be extracted from it.

duplicating the driver hardware would indeed not be that hard.
I don't mind the limited power output, I would only be using 1 iron at a time.
Getting the right firmware seems to be the biggest obstacle. I have the software for programming the WD1M, but it doesn't seem obvious to extract the firmware.
I guess all in all it will be more trouble than it's worth, so I'm putting it on hold for now. Maybe I'll look into it again later...

[z01z]

Getting the right firmware seems to be the biggest obstacle. I have the software for programming the WD1M, but it doesn't seem obvious to extract the firmware.

Sorry about that, it was wishful thinking...
It appears that the firmware updater package doesn't contain the firmware after all. The program simply wants to open a file with the firmware, which is not there.

[YoYo]

I have WD2 with dead PIC(( have anybody firmware for this station?

[HipHopAst]

As a previous OP. Does any have firmware for WD2 Station. I planing to update WD1 to WD2 as 2 channel is almost impossible to buy for decent money and i already have 1 channel version.
Any one have firmware and what components do i need to successfully update my station?? I have PIC18F6622 chip on it.

[HipHopAst]

Thanks for firmware.
Any one have PCB pictures of WD2??
Or what components i need to add to run as 2 channel?
Regards

[OomJan]

Good Day!

I also need the firmware file for the Weller WD2 as mine wont start anymore.

with kind regards
Kevin

[iacouper]

Hi everyone, does anyone have the firmware for the WD2M unit?  I need to replace and/or re-flash my PIC18F6622.

[Mr. Scram]

Thanks for firmware.
Any one have PCB pictures of WD2??
Or what components i need to add to run as 2 channel?
Regards

I may be able to help in a while. Please ping me in a month or so.

[HipHopAst]

That's would be great. Thanks. I'll ask you some time in May. Thanks

[marjanko]

Does anyone have WD2 weller software for PIC186622? I am interested in reworking WD1.

[googlyone]

Hey there,
I have a Weller WD1 using the PIC 18F6622 micro that is exhibiting exactly the same symptoms much discussed in this thread.

Has anybody a copy of the firmware for the 18f6622 for the WD1?

If so I would be really grateful if i could grab a copy!

[CryoME]

Hi All,
I am new here, I got a Weller WD2 station. does not work, PIC18F66222 chip seems burnt. I can replace it with a new chip but I dont have microchip programmer. Is there a way to reprogram it wih the weller usb port? does anyone has a hex file for the weller WD2/M?
Thank you!!!!

[Khaveer]

I've managed to dump firmware from both revisions of WD1 stations. I hope someone will find those useful.

[stenzer]

First of all hi everyone,

I'm following the EEVblog forum for several years as a guest, and of course I'm watching dave's videos regularly.

As I got my hands on a dumped Weller WD1 for 20 € I thought I will give it a try, as there was no stated/indicated error.
By powering up the solder station without a soldering iron attached I get the first attached image below, which looks good to me at first glance.

Should the display should show even more during powering up?

After powering up, the display shows the icons in the second attached image.

As far as I can remember, the display should show at least the three set temperatures (I, II, III). So it seems something is messed up.
I measured the 12 VAC as well its rectivied ~16VDC representation, used to power the front/display PCB. I measured the output voltage of the 7805, which is bang on.
When I'm pressing both error buttons (both buttons to the right of the display) for 2 seconds or 4 seconds, I'm not able to enter the setup mode for setting up the special functions, as described in the manual.
So I assume the MCU (PIC18F6622) is somehow damaged, although I cannot see any physical signs that the MCU has been damaged, see third attached image.

Can someone tell me if it's the MCU? I have seen in reply #66 there is the appropriate HEX file available. I have a PICkit 3, so flashing a new MCU or "reflashing" the current one shouldn't be a problem.
Is there something I have to keep in mind during flashing, or has anyone experience with the provided HEX files (do they work as expected)?

I would appriciate any advise.

BR

PS.: it seems I'm not able to insert the images within the text.

[stenzer]

Hi,

I was able to take some pictures of the display of a fully functional WD1.
The first attached picture shows the display during startup and the second one when fully powerd up.
As can be seen, both pictures are taken without a soldering iron attached.

I already reflashed the MCU. Still the display is half blind. Afterwards I tested the WD1 with a LR21 solder iron and it is getting hot. I'm able to change the temperature as well.

Next step was measuring the voltages at the individual LCD pins turing power up. I was able to measure a voltage of ~5 V at each pin for a short time during powering up. So I think the LCD display got damaged.

Does anyone know if there is an approproate replacement display available, or the datasheet which shows the pin assignment to the individual segments? I would like to exclude the PCF8576 LCD driver.

BR

[stenzer]

Hi,

as the display seems to be broken I would like to connect the solder station with my PC. Therefore, I would need the firmware for a WD1M with a PIC18F6622.
I measured the communication signal levels at the pins of the PIC18 (connector X3) with the WD1 (non M) firmware, and there is nothing going on (RX: permanent 0 V; TX: permanent 5 V).

So if someone would be so kind to provide the firmware for the WD1M with a PIC18F6622.

THX & BR

[Miwer]

Hi,

So I just want to share my repair experience on a WD2M. It had a problem where irons connected to channel 1 would have thermal runaway, and get glowing red. I could see the thermal regulation was working (somewhat), because when I set it to a low temperature (say 150*C), the iron would still get so hot that it melted the solder, but eventually settle, and it would throttle the heater to maintain the (too high) temperature, thinking it was only 150*C. Channel 2 did not show this issue and was fine.

After disassembling the unit and scoping the thermocouple signal from channel 1 and the op-amp output associated with that channel, I could NOT reproduce the problem. I reassembled the unit, and the problem would show again.

So I found out there was a lose connection between the power pcb and display pcb, which caused messed up thermocouple readings on channel 1. I went over the connectors with a soldering iron, but that did not solve the problem. Wiggling the ribbon cable would still show the issue. Finally I disassembled the connectors on both ends of the ribbon cable, and simply replaced it with a new piece of ribbon cable, pressing on the same connectors on both ends, and that finally solved the issue.

So to anyone else having unstable temperature issues on these Weller stations: Check the ribbon cable  

I also managed to readout the PIC18F6622 chip, so it's attached here in case anyone needs it. Also made nice pic showing the programming connections on this model.

Have a nice day.

[stenzer]

Hi everyone,

I was able to establish a remote communication with my (non-M) WD1, see attached pictures. There is no dedicated firmware needed. It seems the WD Monitor software is created to be used with a certain USB to UART IC. I suspect this is caused by the NI-VISA Run Time Support/Lab-View realization, which is installed with the WD Monitor software. I was able to establish the communication with a cheap CP2102 board, ordered on Aliexpress.

As I'm more active at an other Forum, please have a look at https://www.edaboard.com/threads/weller-wd1-m-display-repair-replacement.396863/ for further details.

I hope this findings will help some of you, to use their WD1 at least with a PC when the display is already blind.

BR

[stenzer]

Hi,

here is also the firmware dumped from my WD1. There is also a picture attached showing the label on the backside of the display board, in case the firmware includes some production year/model related calibration values.

BR

[BinaryBits]

Sorry for posting in such an old thread, but does anybody have the firmware for the WD1M station?
There have been firmware uploaded in this thread for most of the other WD stations except the 1M.
So if somebody has it I would really appreciate if you could upload it here.
Thanks.

[ascom]

Glad I found this! Thanks for the schematics

I installed a led mod like this one : http://www.eevblog.com/2012/02/03/eevblog-242-hakko-fx-888-soldering-iron-hack/
I just connected a led in series with a resistor between GND and Triac_ch1 ( I think it was, just probed around to find a good spot to solder near the connector)
Now I wont forget the damn thing turned on for a couple of days in a row! 

Do you have any photos where you exactly soldered ground and positive of LED? If i not wrong, on the Triac_ch1 is AC power.