#230
Ғылым және технология
#230 Bose CineMake AV520 surround sound system repair.
This was a simple fix i thought but became quite a long drawn out hunt for a self induced short circuit, but happily in the end it was found, removed, and I was back to a happy working system
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Пікірлер: 22
That was a real bugger, well done for fixing it. A trap for the young players.
@TheEmbeddedHobbyist
2 ай бұрын
thanks Dave, not sure how i would replace it.
@andymouse
2 ай бұрын
Squeak !!
@daveodessa
2 ай бұрын
@@andymouse Cheese
That's an interesting board layout! I can't think of a reason why anyone would do that, especially with so much room in that area of the board. Thank you for showing us that unique design. Regards, David
@TheEmbeddedHobbyist
2 ай бұрын
The board is a multilayer and there are caps that just sit on pads connected by via's along with other components as well. So no way of following a connection. When looking for the short it was impossible to work out where any tracks went as none are visible. Not made to be easily repaired. Along with cans that can't be replaced if removed?
@davidv1289
2 ай бұрын
@@TheEmbeddedHobbyist Bugger! Still a bad idea to put a via that close to a solder pad.
Nice one ! ....Cheers !!!
@TheEmbeddedHobbyist
2 ай бұрын
Well thanks Mr Squeak, wonder where Fred is? He must be in hiding 🙂
@andymouse
2 ай бұрын
@@TheEmbeddedHobbyist Yeah he's usually in first, probably having some Tea!!
@TheEmbeddedHobbyist
2 ай бұрын
@@andymouse I even put in some lift muzak for him. 🙂
@andymouse
2 ай бұрын
@@TheEmbeddedHobbyist :)
That's a shocking bit of design.
@TheEmbeddedHobbyist
2 ай бұрын
you're right, but at least it's back up and sounding great again.
@AJB2K3
2 ай бұрын
@@TheEmbeddedHobbyist Well, that's music to my ears.
@TheEmbeddedHobbyist
2 ай бұрын
@@AJB2K3 it's not just the music it's the chest thumping bass that i missed. The sub did a fantastic job on rumbles and bang.
@AJB2K3
2 ай бұрын
@@TheEmbeddedHobbyist it’s all about the base!
@TheEmbeddedHobbyist
2 ай бұрын
@@AJB2K3 never understand why they named the low notes after a fish.
Designers don't care about bad design because they never have to fix anything.
@TheEmbeddedHobbyist
2 ай бұрын
Most of my projects had a use life of 25 years, so had to be easy to fix. :-(
Bad layout design for sure.....dear oh dear!
@TheEmbeddedHobbyist
2 ай бұрын
it was that old assume that bit my bum. i assumed that as they were so close they must be connected. Assume makes an Ass out of u and me.