On My Bench.

What people are working on at the moment
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Dave the bass
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#61 Re: On My Bench.

Post by Dave the bass »

andrew Ivimey wrote: Mon Feb 19, 2024 9:23 pm SMD was waiting in the wings.
Wouldn't they fall off if the bird took flight?

Seems an odd place to put electronic components.
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andrew Ivimey
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#62 Re: On My Bench.

Post by andrew Ivimey »

Theatre, darling boy, theatre!
Philosophers have only interpreted the world - the point, however, is to change it. No it isn't ... maybe we should leave it alone for a while.
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#63 Re: On My Bench.

Post by Dave the bass »

*flounces and exits stage left*
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pre65
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#64 Re: On My Bench.

Post by pre65 »

Dave the bass wrote: Wed Feb 21, 2024 9:25 pm *flounces and exits stage left*
Heavens to Murgatroyd! :wink:
The only thing necessary for the triumph of evil is for good men to do nothing.

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#65 Re: On My Bench.

Post by Cressy Snr »

To safety pins even! :mrgreen:
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Mike H
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#66 Re: On My Bench.

Post by Mike H »

Ah I remember poking about in old boards like that, trying to figure out what does what. A fellow sixth former who knew more about it than me, I used to drive him nuts asking what does this do? How does this work? And what does this do? And how does this work?

:lol:
 
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Dave the bass
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#67 Re: On My Bench.

Post by Dave the bass »

Next on the bench is an M Audio Audiophile USB soundcard, I bought this years ago not working, its been in the pile of 'things that need doing' since then. The seller admitted it had been plugged into the wrong PSU at the time of purchase.

This is it...
Image

The PC doesn't recognise it when its plugged in even though I have a driver installed. The sound via headphones distorts badly too, hmmm.

Lid off...
Image

Signs of heat in the PSU area on the underside of the PCB.
Image

Ooooh, + and - 15v rails OK as is the 3v3 rail but the +5 is down, hmmm, these 2 Electrolytic caps to the left look bulged...
Image
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#68 Re: On My Bench.

Post by simon »

Dave the bass wrote: Sun Feb 25, 2024 7:28 pm Signs of heat in the PSU area on the underside of the PCB.
Image
What/where are the signs here Dave? The solder joints by your finger look okay. I'd never have seen this. Perhaps I need to looking on a big screen not a phone.

Nice manicure BTW.
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Dave the bass
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#69 Re: On My Bench.

Post by Dave the bass »

The PCB is a yellowy-brown colour where the heat from the 4 regulators has affected the PCB, its a bit of a visual give-away when fault finding and its helped me locate faults in then past.

Ta! :oops: I look after my fingers :)
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#70 Re: On My Bench.

Post by simon »

Ah yes, I see it now.

Guessing that's your fret hand rather than strumming hand? (Yeah, you guessed, I'm not a musician!)
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#71 Re: On My Bench.

Post by SteveH »

Nice selection of stressed electros there dtb. :D
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#72 Re: On My Bench.

Post by Mike H »

simon wrote: Sun Feb 25, 2024 9:40 pm Ah yes, I see it now.
S - P - L - A - S - H . . .
 
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#73 Re: On My Bench.

Post by simon »

Hey, it wasn't obvious on my phone! Honest! And my attention was drawn to Dave's tidy manicure which appeared to me to be pointing at the two soldered joints!
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#74 Re: On My Bench.

Post by pre65 »

simon wrote: Wed Feb 28, 2024 8:13 am And my attention was drawn to Dave's tidy manicure
But no nail varnish. :lol:
The only thing necessary for the triumph of evil is for good men to do nothing.

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#75 Re: On My Bench.

Post by Mike H »

simon wrote: Wed Feb 28, 2024 8:13 am Hey, it wasn't obvious on my phone! Honest! And my attention was drawn to Dave's tidy manicure which appeared to me to be pointing at the two soldered joints!
Sorry, that was me seeing it for the first time as well, after you. :D

Not a criticism.
 
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