Ok so C1 just exploded... msdiypnp 90-93 - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members

MEGAsquirt A place to collectively sort out this megasquirt gizmo

LinkBack Thread Tools
Old 08-21-2013, 08:43 PM   #1
Thread Starter
Join Date: May 2013
Posts: 26
Total Cats: 0
Default Ok so C1 just exploded... msdiypnp 90-93

So i'm looking at the mainboard and it looks like the positive side of c1 has the trace hanging out of the board. Possible quality issue with the board?

It looks like the trace lifted out the run and then shorted on the negative of c1.

I just really feel screwed here, i don't know what to do.

I guess its possible i put c1 in backwards, but i really doubt it. I've been building and playing with electronics for the past 30 years. C1 and C2 are oriented the same way, and C2 still has the positive symbol with the arrow on it pointing the correct direction.

But even if i did put c1 in backwards - the car was running for 4 hours or so. Reverse voltage to a capacitor makes them blow instantly. And even if i put it in backwards, would that really cause the trace to lift?

I'm just baffled and feel like I wasted $500 on this thing, and now i'm paying for a possible quality issue from diyat. I've sent them an email, but i'm not sure what they will say.
slothy is offline   Reply With Quote
Old 08-23-2013, 05:18 PM   #2
Thread Starter
Join Date: May 2013
Posts: 26
Total Cats: 0

So after contacting Matt at DIYautotune, it seems either the capacitor failed, or it was installed backwards. The printing on the capacitor indicates that it was installed correctly.

His feedback indicated that I can run a jumper directly to the transistor in the circuit, and trim out the broken trace.

Hopefully i can get this back together this weekend and start tuning.
slothy is offline   Reply With Quote
Old 08-23-2013, 05:54 PM   #3
Boost Czar
iTrader: (61)
Braineack's Avatar
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,872
Total Cats: 1,790

get new ones and replace.

it's happened to some of us, i think there's a bunch of bad ones in the mix...
Braineack is offline   Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
1991 Turbo Miata partout tottestad Miata parts for sale/trade 18 09-14-2015 08:52 PM
90-93 Intercooler Throttle Body Pipe for Sale Stripes Miata parts for sale/trade 16 02-18-2011 02:11 PM
Miata Parts Blowout! Turbo, Tony DP, misc... sbrian2 Miata parts for sale/trade 41 06-18-2008 09:58 PM
FS: 90-93 radio surround, turn signal, TSI. iluvtruenos Miata parts for sale/trade 2 06-22-2007 09:23 AM

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

All times are GMT -4. The time now is 04:40 AM.