My mate the plumber got himself a 4001N with no card, so I pop in the LED simm and after a bit of fiddling the box reveals it's secrets.
I remove the bridges ( I have a crap LED simm with a red button) clap the thing back together program him a fun and fire it up.
Horror! display wouldn't come on at first then when it did it came up all 88:88 (flickering) and now when plugged in nothing .
I have tried reflowing the atmels and replacing the top223y and the smd cap next to it, but nothing.
Is there a specific area to check for voltages/resistance etc.
any help greatly appreciated.
I remove the bridges ( I have a crap LED simm with a red button) clap the thing back together program him a fun and fire it up.
Horror! display wouldn't come on at first then when it did it came up all 88:88 (flickering) and now when plugged in nothing .
I have tried reflowing the atmels and replacing the top223y and the smd cap next to it, but nothing.
Is there a specific area to check for voltages/resistance etc.
any help greatly appreciated.