Home |
Search |
Today's Posts |
#1
![]() |
|||
|
|||
![]()
A friend of mine inadvertantly plugged in his power cord backwards,
after cleaning his mobile. The middle (offset pin) was loose and pushed back in the radio allowing the plug to slide in reversed. He did not have an inline fuse connected at the time. Needless to say it killed the radio. I told him I'd look on the inside for him. I found nothing burnt up on the inside. After fixing the power pins, I correctly connected it to a D.C. power supply on my bench. The radio won't come on. When I started checking for voltage, I found that I had voltage everywhere. 12 volts is on the chassis, both sides of the on/off dial, everywhere.... Anyone have any advice on what to look for next? It's hard to troubleshoot with the voltage meter, when power shows up everywhere....Thanks |
#2
![]() |
|||
|
|||
![]()
Sorry for the multiple post. I kept getting server errors....
On Tue, 07 Oct 2003 22:30:09 -0400, tomagain wrote: A friend of mine inadvertantly plugged in his power cord backwards, after cleaning his mobile. The middle (offset pin) was loose and pushed back in the radio allowing the plug to slide in reversed. He did not have an inline fuse connected at the time. Needless to say it killed the radio. I told him I'd look on the inside for him. I found nothing burnt up on the inside. After fixing the power pins, I correctly connected it to a D.C. power supply on my bench. The radio won't come on. When I started checking for voltage, I found that I had voltage everywhere. 12 volts is on the chassis, both sides of the on/off dial, everywhere.... Anyone have any advice on what to look for next? It's hard to troubleshoot with the voltage meter, when power shows up everywhere....Thanks |
#3
![]() |
|||
|
|||
![]()
Sometimes the so called chassis is not connected to the Board ground,
Note where the negative lead is going to. and measure from there. "tomagain" wrote in message ... Sorry for the multiple post. I kept getting server errors.... On Tue, 07 Oct 2003 22:30:09 -0400, tomagain wrote: A friend of mine inadvertantly plugged in his power cord backwards, after cleaning his mobile. The middle (offset pin) was loose and pushed back in the radio allowing the plug to slide in reversed. He did not have an inline fuse connected at the time. Needless to say it killed the radio. I told him I'd look on the inside for him. I found nothing burnt up on the inside. After fixing the power pins, I correctly connected it to a D.C. power supply on my bench. The radio won't come on. When I started checking for voltage, I found that I had voltage everywhere. 12 volts is on the chassis, both sides of the on/off dial, everywhere.... Anyone have any advice on what to look for next? It's hard to troubleshoot with the voltage meter, when power shows up everywhere....Thanks |
#4
![]() |
|||
|
|||
![]()
tomagain wrote in message ...
Sorry for the multiple post. I kept getting server errors.... I got exactly the same a little while back. unless your system gets a "received" reply from the server, it will keep trying to send it again. My system sent quite a few copies, until I disconnected, reconnected, and tried again. As for your CB problem, it sounds like the radio is a grounded chassis type.. and the supply is disconnected on the negative side. Check the power lead black wire, the wires from the socket to the board, any coils from the socket to the board, and any PCB tracks from the neative PCB connection to the main negative foil on the board. Regards, Peter. |
Reply |
Thread Tools | Search this Thread |
Display Modes | |
|
|
![]() |
||||
Thread | Forum | |||
Help! Transformer induces hum to chassis! | Homebrew | |||
FREE: Gonset GSB-100 chassis - PICKUP PREFERRED | Boatanchors | |||
FREE: Gonset GSB-100 chassis - PICKUP PREFERRED | Equipment | |||
Steel no good for chassis? (Which metal is best for old regen designs?) | Homebrew | |||
Steel no good for chassis? (Which metal is best for old regen designs?) | Homebrew |