Leaderboard
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Popular Content
Showing content with the highest reputation on 06/10/24 in all areas
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This one was a bit odd. There was a fault on the lamp circuit and about 5 lamps were stuck on. When I put the scope probe on the relevant output from the driver chip IC11 (74LS138) the lamps went super bright?? Thinking the chip must be faulty a new one was fitted but no difference! Then I did what I should have done first off which was to visually check the board and I noticed this... It hasn't come out too well in the pic but the top horizontal row of the resistor network pins (centre top) showed two that had never had solder on from the factory!! By the way this wasn't the cause of the lamps being stuck on, a couple of the output transistors were leaking but that's bread and butter stuff.1 point
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The colour is RAL 7001 gloss 😁1 point
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What better to do on a Saturday afternoon than re-assemble Line-Up 😍1 point
