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General Chat Thread, Frying tonight...HP formatters.. in General; I'm really rather pleased today....we've got a fleet of HP P3005 printers, all are starting to flake at boot etc. ...
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    Sirbendy's Avatar
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    Frying tonight...HP formatters..

    I'm really rather pleased today....we've got a fleet of HP P3005 printers, all are starting to flake at boot etc. 3 in our store at this moment, written off. After reading about this, I decided to place one formatter PCB from the LRC P3005, which is starting to go senile, into DT's precision fan oven, preheated to 190degrees C.

    5 minutes in, one of the capacitors is looking a bit bulgy. Out it came, onto the Anvil to cool. Popped it back into the 3005..still running nicely this AM..heh. Before it would do maybe a page then lock up.

    Next batch I cook, 175 degrees for 5 minutes, give the caps a break.

    Rock on, heh...

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    there seems to be something up with HP's formatter factories... had to do this in a less precise gas oven to a P2015N formatter - may do this to one of the P3005's that going a little dodge... and then we have a CP4025DN formatter fail (fortunately in warranty), but wouldn't put that past some dry joints or other.

    Think my recipe was gas mark 4 for a few mins.

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    Oaktech's Avatar
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    I've got about 6 of these in the store, so i'm going to try it... I've also got a 2025 and a 2015 that exhibit similar symptoms, so i might rack 'em up in the commercial oven!

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    Sirbendy's Avatar
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    IIRC, 2015s are common for it too. I tried it with a heatgun, but it didn't take. Using the DT oven though..ticking up to 24 hours with no lockups or issues. Not bad, considering it was unuseable beforehand, and I mildly cooked the caps..heh.

    I'll de-board the other dead ones and do them on friday after early doors, as it'll just be me here.

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    Maybe use some tinfoil or something to protect the smaller components?

    Ben

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    ive used this trick a few times now on a few bits of kit. Always get a few funny looks when I go to the cookery room and ask to borrow an oven for half hour with a circuit board in my hand.



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