Maker Pro
Maker Pro

stc stc89c54rd controller

chipsfish

Apr 24, 2013
2
Joined
Apr 24, 2013
Messages
2
Hi

We bought a treadmill around two years ago, we hadn't used it much (either too lazy or too busy) so usage was around 6-10 times a year. Anyway the wife decided to go on it but it beeps now when starting up, flashes a date of manufacture on the led display followed by a E01 code.

I called the company that made the thing with no response so I emailed them and got an email back a few days later, basically I would need to purchase a new board at $270. I took the board to a component store and they couldn't 'fix it'.

The board has few components on them the main one is a chip "stc89c54rd 40c pdip40"
All the leds are working, the other capacitors must be working else there wouldn't be any leds lights on.

I was thinking about getting a bunch of these mcu from china as there only 0.43$ each and then copying the mcu software onto a blank one. But if the chip is encrypted, I wouldn't know what to do.

Do you think I should just buy the board (what if that goes dolally in two years as well!) or
attempt to clone it onto another chip?

I'm a newbie at electronics so I wouldn't know what to purchase to clone it if I went down that route. Do you have any recommendations on software or hardware (that can also copy encrypted chips, if it is)?

thanks and sorry for the long post.
 

(*steve*)

¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd
Moderator
Jan 21, 2010
25,510
Joined
Jan 21, 2010
Messages
25,510
I wouldn't bet on it being the microcontroller at first. It's far more likely to be something else.

Post a picture of both sides of the board and let's see what we can see.

It would be really nice to know what the E01 error means...
 

chipsfish

Apr 24, 2013
2
Joined
Apr 24, 2013
Messages
2
thanks Steve,

My daughter has the camera so when she pops back from university I'll take some pictures of the board.

I told the support people about the E01 and all they said was it needs a new board. I've tried finding out about the error code online but drew a blank.
 
Last edited:
Top