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PostPosted: Fri Nov 20, 2015 5:13 pm 
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Joined: Fri Mar 30, 2012 8:31 am
Posts: 332
Location: Wiltshire
Car Model: ST205
Just a heads up about ST205 ECUs capacitors blowing / leaking.

I have come across two instances of this in the last two weeks.

One was mine and one was a mates.

Mine was C895, 10 micro farad, on the daughter board, and my mates was on the main board, 33 micro farad.

Both failed after the ECUs had been powered off for a few months, and then used again.

Both repaired for less than a quid, but a pain if you break down.

One to watch out for if you don't use your car over the winter, and disconnect the battery? Image

Sent from my SM-G928F using Tapatalk

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[color=#000080]ST205 WRC 1994
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PostPosted: Fri Nov 20, 2015 10:45 pm 
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Joined: Wed Jul 13, 2005 12:06 am
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Location: Perth, Western Australia
Car Model: ST205
Thanks for the heads up Phil, gives a new meaning to use it or lose it :lol:

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1994 Toyota Celica GT-Four ST205WRC JDM 269bhp @ 0.9bar
1994 Toyota Celica GT-Four Special GT 590bhp @ 1.8bar
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2012 Van Diemen JL12 Formula Ford 1600
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PostPosted: Fri Nov 20, 2015 11:22 pm 
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Joined: Wed Jul 13, 2005 6:54 pm
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Hmmmm,
Thinking about it there is a well known procedure for awakening an old amplifier from a few years of slumber involving slowly bringing it upto voltage to "reform the electrolytic capacitors" otherwise they can explode.

I guess that a similar procedure should ideally be adopted for an ecu.

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PostPosted: Sat Nov 21, 2015 1:15 am 
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Joined: Sat Sep 02, 2006 3:13 pm
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Location: Bournemouth
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Diceman wrote:
Hmmmm,
Thinking about it there is a well known procedure for awakening an old amplifier from a few years of slumber involving slowly bringing it upto voltage to "reform the electrolytic capacitors" otherwise they can explode.

I guess that a similar procedure should ideally be adopted for an ecu.


And for any electronic equipment.

Generally mass market domestic appliances are the worst as they tend to use the cheapest components and only just rated for the job.

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PostPosted: Sat Nov 21, 2015 9:05 am 
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Joined: Wed Jul 13, 2005 6:54 pm
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If anyone needs one I rigged up a very small bench psu last night for ecu that has variable voltage from 2.5 to 12v. Could be ideal for warming up an ecu! (Built for warming up and testing ecu on the bench in the warm)

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