Magic smoke

PhilP

G Scale, 7/8th's, Electronics
5 Jun 2013
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To get back on topic:

IMG_20210521_133339.jpg
The regulator is centre-picture..
In real-life, about 2mm square. :nerd:

PhilP.
 

PhilP

G Scale, 7/8th's, Electronics
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You’d certainly need a steady hand. Incidentally, mine’s in the post to Tamworth.
Les.
Hi Les,
Thought you might have twigged? - With the burn-mark, in the bottom-left corner of the chip..

That is your Rx65c! :D
 

PhilP

G Scale, 7/8th's, Electronics
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Looks like you did indeed find the smoke outlet port. Should not be too hard to repair, unless more around it is disturbed.
That is the 'fun' bit... Not blowing away any of the other teeny-tiny bits, with the re-melt hot-air tool.
I have tried applying a normal soldering iron bit to the chip, but they have two pads underneath, which dissipate heat remarkably well. :wondering:
 

PhilP

G Scale, 7/8th's, Electronics
5 Jun 2013
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And there it was, gone!

IMG_20210521_184305.jpg

Replaced by something much bigger!
IMG_20210521_192258.jpg

The 'dead' regulator is sitting down on top of the new one, with its 'legs' in the air!
:D :nerd:
 
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Lez2000

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