Nistune Forums

Hi All,
In attempting to remove the stock Eprom chip, i managed to somehow gouge out a little piece of the ecu. It doesn't look like the little tracks are connecting anymore at that spot.

Will this affect my tuning/ECU?

Please have good news for me. :'(





Also,
When soldering in the 28pin can the solder be touching another pin. 1 or 2 of the soldering spots actually touch. Will this not work, each has to have it's individual solder without touching?

Thanks

it looks like a few tracks are severed.

personally I would not solder the socket in just yet,
wash the board well with appropriate chemicals and get a magnifing tool to really zoom in on the damage.
Test pad to pad continuity to ensure you know how many breakages have occurred. (always nice to have circuit schematics for this)
It isn't too bad given you have ripped out the thru-hole sleeves when wedging the rom out.
(should be able to rewire the broken tracks with some circuit tracking wire).

or

if it looks to difficult, take to a local electronics repairer to check and repair.

In most cases severed tracks can be repaired by rewiring.
A multimeter is a necessity to follow, test and repair the damaged tracks.

just an observation, but it looks like a blob of solder on the lower corner of IC4 ( ..near the printed '13' ) ?
if it is, these are the things that can ruin ECU's .
Always make sure there is no leftovers of solder anywhere before you power up the ECU...

A magnifying visor or some sort of visual aid is invaluable with this sort of stuff. Particularly when you start having to do track repair. I call it my "nerd visor". My kids laugh at me. But it works great!

I use one like the 86004 on this page. Generally the lights that come with them are rubbish, so I've ripped those off and use a flouro desk lamp for light source.

http://www.ehobbytools.com/contents/en-us/d67.html

That one is only 2.2x magnification and works a treat. There are higher magnification units around but bear in mind that the higher you go the closer you'll have to get your head to the work.

ALWAYS clean the board before and after repair with acetone or similar.
ALWAYS keep a damnp sponge on hand to wipe the tip of your iron to keep it clean.

PL

Okay I have seen this before... and its fixable but you will require good magnification and eyesight (we use microscopes here!)

What you need to do is identify which tracks have breaks. Use a thin blade knife (stanley) to carefully scrape the green coating from the top of the tracks

Put some flux on and tin the tracks where you removed the coating

Using a thin single strand of wire, tin the strand and use tweezers to hold it. Next you need to place a cut shortened piece of the strand over the track and then quickly solder to bridge the tracks