JBC AD2700 soldering station.... fixed-temperature

[gabinetex]

.

[staxquad]

well...   Howard did have a free AC2600 service, according to their website

"Free Service from HEI
With the use of the AC2600 Console you can fix the working temperature, adjust the sleep temperature and delay of sleep temperature, set to read Celsius or Fahrenheit, set adjustment of temperatures up to ±99ºF (50ºC), and set the maximum working temperature. The beauty is that you do not have to purchase the AC2600 --- we will make the settings for you, free of charge."

who knows if that offer still exists for equipment not sold anymore, or where on Earth you reside (please update your country flag) to find JBC service

http://www.howardelectronics.com/jbc/ad2700.html

[Geo]

Gabinetex,

I realise this is an old post but I thought I would try here first before opening a new topic as there is no other information on the internet.

Did you happen resolve this matter? Just bought the same Iron with the same fixed temperature problem on Ebay and will return the station if I cannot resolve the issue.

Thanks in advance if you get in touch

Geo

[baho]

Hi,
Maybe it will be useful for anybody. I have solution but it needs to reprogram internal EEPROM for that.
In attachments you can find archive with two files: original (blocked temp) and fixed (free temp). Fixed file have changed only one byte at 0x30 position (01 -> 00).
I have found it a while ago in 2011 but I didn't realize that it may needs not only for me  
For modify EEPROM I was needed to desolder it firstly.

[2N3055]

Hi,
Maybe it will be useful for anybody. I have solution but it needs to reprogram internal EEPROM for that.
In attachments you can find archive with two files: original (blocked temp) and fixed (free temp). Fixed file have changed only one byte at 0x30 position (01 -> 00).
I have found it a while ago in 2011 but I didn't realize that it may needs not only for me  
For modify EEPROM I was needed to desolder it firstly.

That is great first post!!
Welcome!

[artelse]

I know it's an older thread, but am wondering about the contents of the EEPROM on my AD2700. It differs as follows:
First dump is my AD2700 followed by the non-fixed and fixed dumps of @baho. 0x30 is the byte changed. As you can see contents are different. Calibration values?

I could just upload the code and see how the station responds. Any ideas?


> hexdump ST24C02.bin
0000000 0200 1663 0600 3c1b 1800 3a41 0000 6304
0000010 4453 3155 4130 3530 0082 0b36 ffff ffff
0000020 0082 0ad2 ffff ffff ffff 0030 0058 ffff
0000030 ffff 0030 006a ffff ffff 0030 006a ffff
0000040 ffff 0030 0058 ffff ffff ffff ffff ffff
0000050 ffff ffff ffff ffff ffff ffff ffff ffff

> hexdump Downloads/jbc\ 2700\ temp/jbc\ 2700\ nonfixed\ temp.bin
0000000 0400 2801 1000 0d07 1600 293a 0000 1605
0000010 4453 3155 4130 3530 0082 0b36 ffff ff43
0000020 0082 0ad2 ffff ffff ea00 0030 0058 3559
0000030 ea01 0030 fe69 3559 ffff 0030 006a ffff
0000040 ffff 0030 0058 ffff ffff ffff ffff ffff
0000050 ffff ffff ffff ffff ffff ffff ffff ffff

> hexdump Downloads/jbc\ 2700\ temp/jbc\ 2700\ fixed\ temp.bin   
0000000 0400 2801 1000 0d07 1600 293a 0000 1605
0000010 4453 3155 4130 3530 0082 0b36 ffff ff43
0000020 0082 0ad2 ffff ffff ea00 0030 0058 3559
0000030 ea00 0030 fe69 3559 ffff 0030 006a ffff
0000040 ffff 0030 0058 ffff ffff ffff ffff ffff
0000050 ffff ffff ffff ffff ffff ffff ffff ffff


Edit: I tried replacing with the 'fixed' eeprom contents, but that didn't work. I also just edited the bytes around 0x30 and that resulted in station not starting up. I put it together again, but now am wondering what was fixed 0x30 to 01 or to 00? Oh well, happy soldering