My car sound system has packed up - I thought it was the amp that was broken BUT occasionally I get some sign of life from it when going over rough ground or if I get engine judder (poor old girl).
The most curious effect is that when the indicators are on or when I "flash the main beam" I get a much stronger sound?
There is no one locally to take it to.
Anyone suffered the same or recognizes the symptoms?
just leave it parked in a dimmly lit area on the local councill estate it will be fixed by the little folk.
Well at least when the insurance pays up.:thumbsup: :bat: :teeth:
It's probably a dodgy connection on one of the pcd's inside
The pcb's are produced en-masse abroad and there designed to have a short life
hence there are a lot of 'dry joints' (nothing to do with drugs ) on the soldering
It's probably a dodgy connection on one of the pcd's inside
The pcb's are produced en-masse abroad and there designed to have a short life
hence there are a lot of 'dry joints' (nothing to do with drugs ) on the soldering
Hmm - I haven't had a look at the guts of it! Dry joints? Well I've got loads of water . In fact I take cod liver oil capsules for my joints. Possibilities .
inbuilt obsolesence means that whereas in the past you could solder new components onto a board, these days you cant usually do that as the bits are so small and fracile that the whole thing melts when you get your soldering iron out.
So highly trained engineers become PCB swappers.. or leave engineering and join the management
rant over..
sounds like a dry joint ( a solder joint where the solder didnt flow properly and hence fails either permanently or intermittently) to me, if it changes when vibrated or an earth fault if it changes when you switch on or off other electric things....
If it's an intermittent dry joint then the fault finding technique is percussive testing. Hit it until it works again or fails completely.
Yeah, you could say that! At poly I did electronics and communications engineering, then did 12 years as a broadcast engineer on operations and maintenance of TV and Radio transmitters before moving into management and then the health and safety side of things.. now spend all my life talking about radio frequency hazards... more interesting than it sounds if you have two anoraks like I do.
I find driving over speed bumps at about 45-46mph really helps with intermittent problems. It either falls off or fixes itself. Either that or a large lump hammer makes the world of difference, especially good for bodywork.
The question, Jules, is can you solder? Because I'm going to have some PCBs need making up pretty soon, and it's much easier to flirt with ladies to get what I want than John, who doesn't seem to appreciate my flirting at all!
inbuilt obsolesence means that whereas in the past you could solder new components onto a board, these days you cant usually do that as the bits are so small and fracile that the whole thing melts when you get your soldering iron out.
So highly trained engineers become PCB swappers.. or leave engineering and join the management
rant over..
sounds like a dry joint ( a solder joint where the solder didnt flow properly and hence fails either permanently or intermittently) to me, if it changes when vibrated or an earth fault if it changes when you switch on or off other electric things....
If it's an intermittent dry joint then the fault finding technique is percussive testing. Hit it until it works again or fails completely.
:secret: Yes you are obviously right, but dont tell my boss cos he thinks I am a highly qualified engineer and health and safety professional. If he realises that I am also a girl then he might stop paying me so well.
Ah but you might have, they were very common in electronic equipment a few year ago. No so now a days.
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