Is my ecu fried??? ***pix inside***
 

Ecu was fine before I chipped it but now I think it's fried. I need your expert opinions. Even with J1 gone my car throws a solid cel when ignition is on and would run as if it was in limp mode and gonna die. I put on another ecu and cel was gone. I think the solder might have crossed some where I'm not sure. What stupid mistakes can you make to fry an ecu when chipping it. Well here are the pictures...help an idiot out. :'(
http://img.villagephotos.com/p/2006-5/1176997/ecu5.JPG
http://img.villagephotos.com/p/2006-5/1176997/ecu4.JPG
http://img.villagephotos.com/p/2006-5/1176997/ecu3.JPG
http://img.villagephotos.com/p/2006-5/1176997/ecu2.JPG
http://img.villagephotos.com/p/2006-5/1176997/ecu1.JPG

Re: Is my ecu fried??? ***pix inside***
 

Wow...cold solder joints like whoa. Try resoldering those pins for the socket, make sure to use a good soldering iron too, at least a 25-40 watt pencil tip.

Re: Is my ecu fried??? ***pix inside***
 

But J1 isn't even connected so whatever's soldered in wouldn't even afffect the rest of the ecu right? Cause I'm getting a solid cel even when J1 is off.

Re: Is my ecu fried??? ***pix inside***
 

you really fucked up some ---- then

Re: Is my ecu fried??? ***pix inside***
 

85watts FTW :y

Re: Is my ecu fried??? ***pix inside***
 

I rock the 35 watt Craftsman special and its fine. If I were you I would take an entire roll of desoldering braid to the back and clean in between the pins where you soldered.

Re: Is my ecu fried??? ***pix inside***
 

Would bad soldering cause an ecu failure? Only if you burnt the board right? I'm looking at the ecu right now and it doesn't seem like it had severe burns. Any clues guys...

Re: Is my ecu fried??? ***pix inside***
 

thats the only reason. Ripped traces also

Re: Is my ecu fried??? ***pix inside***
 

I cant tell if its glare or not...but it looks like you have a lot of stray solder in the J1 area...maybe something is touching.

Re: Is my ecu fried??? ***pix inside***
 

http://img.villagephotos.com/p/2006-5/1176997/ecu2.JPG
Are these leads touching the ECU cover plate? They look rather long.

Re: Is my ecu fried??? ***pix inside***
 

That's just the melted plastic linning. I double checked this morning and nothing is touching J1.
they were but I cut them shorter so they aren't any more. Could putting the ostrich in the wrong way cause an ecu failure. I finally realized that after my second try too. Ostich is still good though casue I just helped tune my buddies car after my ecu incident. If you want more pix of certain areas u think might be it let me know...

Re: Is my ecu fried??? ***pix inside***
 

I'm sorry man, I know you're trying but that looks like complete ass. I used to do electronics repair for a living and that's a mess. The leads need to be clipped, the solder needs to come off and get laid back down right. You have residue of cheap solder flux everywhere too, needs to get alcohol scrubbed with a toothbrush.

Send $20 and the ecu to me and I'll fix your mistakes and ship it back to you (does not include testing/troubleshooting, just soldering).

On a much brighter note, I got the chance to examine a xenocron chipped ecu. Looked clean. I'm about to send you some goodies xeno that you'll really like and won't go back to anything else.

Re: Is my ecu fried??? ***pix inside***
 

X2 on the clean up.

you really can't tell where your problem is unless something is obviously burnt, and I'm sure you don't have an o-scope or any other type of diagnostic equipment. So get some braid and clean that setup.

Re: Is my ecu fried??? ***pix inside***
 

Just like everyone else has said, your soldering is poor at best.

I use a small iron to solder PCB's, 12w is more then sufficient (no matter what all these other guys say). You can just rework the existing solder on the board, get some liquid flux and dab it on the solder joints, then heat them back up until the solder flows.

It may be that a short has permanently damaged your ecu, only by correcting your previous mistakes will you find out either way. Might be time to order a xenocron ready chipped ecu.

Re: Is my ecu fried??? ***pix inside***
 

i just think the technique is off, doesn't look like the solder is "penatrating" we'll say. need to get it to go in, not above

Re: Is my ecu fried??? ***pix inside***
 

How would I test it to see if it's bad besides the fact that it's throwing a cel on my car. I have access to various electrical equipment at school like o-scopes, voltmeters, etc. I'd like to narrow down where it might have shorted. Any one ever trouble shooted an ecu using electrical equiptment let me know thanks.

Re: Is my ecu fried??? ***pix inside***
 

Hell of a lot easier to just clean your soldering mess up versus trouble shooting. The most trouble shooting you can do without schematics would be checking for bad traces or burnt chips (and sometimes they run just fine with burnt chips). Clean up the solder - go from there. If you have access to all that fancy ---- at school then why not bring it up there and do it right?

Re: Is my ecu fried??? ***pix inside***
 

Okay obviously i'm an idiot...how would I clean up splatter made by the solder? I tried to remelt the splattered solder on the board with the soldering iron and it was melting and comming off. But not sure if it might have burnt the board or not. I didn't leave it in one spot for long periods of time though. After doing so, there doesn't seem to be any solder touching eachother. I plugged it back into my car and still giving me a cel... ???

Re: Is my ecu fried??? ***pix inside***
 

The only thing i can currently think of is, when the capacitor leads were touching the case, you had a short between power and ground. Its probably safe to assume Keihin engineers included some surge protection, but you might have blown a power rail.

First step would be to test the power and grounds on your board. An easy way is to look up the component part numbers and reference the data sheets. Start with power and ground, then look for any obvious signs of damage.

Re: Is my ecu fried??? ***pix inside***
 

Get another ECU...................if you haven't already








I know I'm probably late

Re: Is my ecu fried??? ***pix inside***
 

first: if you are not clever in hot air. never try to use it.
second : you need a solder sucker to get the solder of the board., or you need some copper wires to catch the solder with.
third: try your skill in any damage board and when you feel cool go ahead and fix what you damage and dont forget to use the flex
forth: afater fininshing chek the solder not be toutching themselves. and clean the board with any gas spray or with the fuel which in your tank.

Re: Is my ecu fried??? ***pix inside***
 

I sell u p06 cheap, pm me

Re: Is my ecu fried??? ***pix inside***
 

You forgot to put the 1k resistor in R54 is all you did wrong.

Re: Is my ecu fried??? ***pix inside***
 

looks like u used really crappy/old solder and tips

get some braid and dab off any splatters

id re solder everything but them long leads touching the ecu case is just a bone head move

Re: Is my ecu fried??? ***pix inside***
 

R54 wouldn't have made a difference. J1 is already cut. and still gettig solid cel when J1 is cut. I think I fried something when the capacitor touched the metal case. This ecu is fucked...

Re: Is my ecu fried??? ***pix inside***
 

send it to me. I run shelter for abused and mishandled ecu's.