Trials & Tribulations of Chip Repairs & Upgrades

64840 Views 347 Replies 51 Participants Last post by Ade, 5 mo ago

GregK

Discussion Starter · Oct 27, 2014 (Edited by Moderator)

4

An F1 DPR chip arrived on my doorstep to be fixed. It looked perfectly OK but would not run when connected to a chassis and tested on a powerbase. After a check of the components, I found that three of the four diodes were not working at all so I replaced them with 1A Schottkys .........

All still looking OK ....... time to test my handy work .......

Reassembled back onto the testbed, I pulled the throttle back and woomph!

... very bright flames & tons of acrid smoke.

As you can see, the dual MOSFETs, top left, has decided to expire. It is a dual MOSFET bereft of any magical smoke, it is an ex-MOSFET.
I wonder if Farnell can help me out in the morning? ......

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Ade

· #4 · Oct 27, 2014

Hi
Funny I thought I saw it move

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Ade

· #29 · Feb 5, 2015

2

Hi
Excellent work Greg

another c7006 lives to fight another day

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Ade

· #37 · Mar 6, 2015

Hi
Just looked at that modded F1 chip,it's superb,makes the capacitor look like a gas holding tank

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Ade

· #71 · Aug 26, 2016

Hi
A true Friday afternoons chip,did they just use bf&I

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Ade

· #90 · Apr 9, 2017

Hi

Some nicely proportioned images of the chip Greg

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Ade

· #93 · Apr 9, 2017

Hi

Looks like it's been barbecued rather than raced

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Ade

· #98 · May 5, 2017

Hi

Well there not mine then

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Ade

· #107 · Jul 27, 2017

Hi

wasn't aware isis had started digital racing

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Ade

· #139 · Mar 25, 2018 (Edited by Moderator)

Hi

I had a few rev f chips back in the day and in car pro works a treat on them, the removal of the analogue function in the upgrade is the key reason they can be tamed

.

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Ade

· #145 · Nov 10, 2018

Hi

more than likely a duff pole on the motor, just get it to stop at the wrong point and when you take off the next time you release the smoke

Best practice is to test the cars in analogue mode for a while, this shows up the dead spot without damage.

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Ade

· #148 · Nov 10, 2018

Hi

and usually being nulli secundus in this particular field

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Ade

· #159 · Dec 15, 2018

Hi

after running ssd for many years with a 20 amp variable volt psu and hosting race days that lasted several hours and completing several thousand laps in the course I never blew one single chip.

I can never fathom out how people can ever inflict the sort of damage that's posted on here.

Ade

· #161 · Dec 16, 2018

Hi
Oh dear, sanding tyres is the best way to kill a chip if done without care...

Ade

· #163 · Dec 16, 2018

Hi
Yes I've seen a duff motor ruin a chip, just needed the motor to stop on the wrong pole and instant short on start up, best practice is to test in analogue mode before chipping.

My other thing i always did was to run at 13.8v max, that said its excessive amps draw that kills them ultimately.

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Ade

· #173 · Dec 16, 2018

Hi

897x 15

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Ade

· #205 · Feb 21, 2019

Hi
You get a choice, all mine uprated but no actual performance gain in terms of speed, just the ability to handle hundreds of laps without failure.

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Ade

· #237 · Jul 25, 2019

Hi

will you be completing your analysis in the drawing room or your DDL....

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Ade

· #239 · Jul 27, 2019

Hi

Can't see any sign of a on board bonfire on that chip, did it just fall off in sympathy

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Ade

· #260 · Aug 16, 2019

Hi

looks like it's been picked out of a skip fire

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Ade

· #271 · Aug 28, 2019

Hi

Marconi has a lot to answer for

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