Headlight lift pod spike? UPDATE

[Scotelan]

I cleared my ECU codes today by disconnecting the battery negative and on refitting the lead I was unable to get a good direct fitment and the lead sparked a few times (the ignition and headlights were off) Some reading suggests the Pod control module may be "confused" - is there a routine to reset the module? The offside lamp raises halfway and the nearside does not work at all but all headlights are illuminating. Both motors wind up and down freely manually and were overhauled a year ago. I know the headlights lifted correctly prior to the battery disconnection.
I hope the "spike" hasn't blown the module internally - any suggestions welcome. Thanks

Yep, you wise ol' owls will have guessed it - a burnt out BUZ 10S2 MOSFET!
Does anybody know a reliable source for one? Thanks.
(If I knew how to upload an image of post it - meanwhile, it's back to the garage with the module before it stinks the house out!

[Tuga2112]

given the coincidence of the timing i assume your the same person who messaged me last night with the pictures ?

i do have a few spare mosfets. but no idea how much it would cost to send them over.

[dapinky]

When mine burnt out in Springtime, I bough these ones from Amazon....... https://www.amazon.co.uk/dp/B0GSG72Z5N? ... asin_title

I gave them to someone who knew what they were doing, and he soldered it all up for me - unfortunately, it was more damage than just the transistor on mine, so I handed the module (and my unused MOSFETS) to Ron Russel at Castle Combe for him to try a long-term solution at some indeterminate time in the future.

I simply took the module from Angies car in the meantime as she never drives it at night.

[Scotelan]

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Well, with the best will in the world and an incredible service by Amazon, I had a go at replacing the MOSFET (thanks to João for his advice) but unfortunately the circuit board and associated paraphernalia are too badly damaged to allow the n/a lamp to operate properly.
Does anybody have a spare lifter module for sale or advice on where to source one? Thanks.

If anyone is interested in the remaining MOSFETS then happy to oblige - always best to attempt a repair than simply scrap a component

[Tuga2112]

did you cehck continuity across the traces in the burned out areas ? that may be all you need to address to save yourself a small fortune

[Scotelan]

did you cehck continuity across the traces in the burned out areas ? that may be all you need to address to save yourself a small fortune

I was just rechecking the tracks when I read your post. I found 2 tracks were shorting near the inboard joint of the solder "fuse" (probably my fault)
which I replaced rather than the tie wire I'd substituted yesterday. The new solderfuse had actually melted, so it did some kind of protection. I seperated the tracks, made a new solde fuse and refitted the module - both lamps lifted as they should both on flash and solid headlamps. Unfortunately when turned off, the n/s has a mind of it's own and raises automatically after around 5 seconds - something is completing a circuit to enable that I guess. Also, the new IRFZ44N MOSFET is getting very warm!
Hey ho, another half day of retirement fully engaged!
I wish I was able to host photos - I used to have Photobucket before they vanished.........................................
Thanks for replying Joao

[Tuga2112]

if those mosfets are similar in the datasheet to the ones i got. they should have zero change in temperature during operation.

from your description i am confident you still have a short somewhere in the board (which could well be the reason for the original failure
).

[Scotelan]

if those mosfets are similar in the datasheet to the ones i got. they should have zero change in temperature during operation.

from your description i am confident you still have a short somewhere in the board (which could well be the reason for the original failure
).

They are a very close, modern replacement so I'm confident they are suitable - the board really is a mess to be honest - there's been a fairly major meltdown!

How do you host photos Joao? Did you read my postscript about the Corvette C5 module in my previous post? Thanks

[dapinky]

It sounds very much like the exact issue I had with mine...... which still happened after the MOSFET replacement.

Lamps worked fine to start, then dropped when required, but the NS one raised again after about 5 seconds and the module was getting hot.....

..... that was the point I removed it again and gave it to Ron as it is beyond my abilities.