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Reverse polarity diode ar 6666
- Thread starter TES
- Start date
The diode itself is Probably easy. There is a chance something else was taken out if the diode was was blown from reverse polarity though.
Man, that's a good radio too!
Like @Shadetree Mechanic said, it could just be the diode but it could not just be the diode. Only one way to find out, show us the specimen and we'll point that guy out.
Like @Shadetree Mechanic said, it could just be the diode but it could not just be the diode. Only one way to find out, show us the specimen and we'll point that guy out.
We adopted the habit of soldering a 6-Amp rectifier diode across the posts inside the radio's power socket. The diode built into most radios is a "one-time" protector. It trips the fuse when polarity is reversed, but gets overloaded and shorts internally.
Back in the day, a slip-seat driver would have to play "Edison Roulette" with his gator clips to the posts on the doghouse of a tractor. The polarity marks had been rubbed off 200,000 miles ago, and if he guessed wrong the radio would be disabled, even if he had the right size fuse in line. A 6 Amp diode would happily pop a 2 Amp or 3 Amp fuse with no damage to the radio.
Makes me wonder if the protection diode in that model is a SMT part? Haven't looked inside one of those yet.
73
Back in the day, a slip-seat driver would have to play "Edison Roulette" with his gator clips to the posts on the doghouse of a tractor. The polarity marks had been rubbed off 200,000 miles ago, and if he guessed wrong the radio would be disabled, even if he had the right size fuse in line. A 6 Amp diode would happily pop a 2 Amp or 3 Amp fuse with no damage to the radio.
Makes me wonder if the protection diode in that model is a SMT part? Haven't looked inside one of those yet.
73
Take a look here
www.on-radio-shop.eu
TVS-Diode „P6SMB“
TVS-Diode „P6SMB“; für diverse Geräte u.A. K.PO DX-5000+; CRT SS-6900 V; CRT- SS-7900; CRT SS.7900V; CRT-SS-8900; President George II, President Washington; S
www.on-radio-shop.eu
Galaxy started doing this in their mobile models by the late 90s. Some newer radios have a 3-Amp rectifier for this.
73
Your links take me to a sign-in page with no other information.Take a look here
TVS-Diode „P6SMB“
TVS-Diode „P6SMB“; für diverse Geräte u.A. K.PO DX-5000+; CRT SS-6900 V; CRT- SS-7900; CRT SS.7900V; CRT-SS-8900; President George II, President Washington; S
73
Jeff
What does a transient voltage suppression (TVS) diode have to do with this thread? This is about reverse polarity, not voltage spikes.
Does the poster know anything about the components he is selling (if the page is even legit)? New member and not even a hello first, just an irrelevant part behind a login.
Does the poster know anything about the components he is selling (if the page is even legit)? New member and not even a hello first, just an irrelevant part behind a login.
He has been here for awhile
I believe he is from Germany and sometimes things get misinterpreted in translation if English is not a users first language.
On edit
The link looks to go to a radio shop, but it appears to be down.
73
Jeff
I believe he is from Germany and sometimes things get misinterpreted in translation if English is not a users first language.
On edit
The link looks to go to a radio shop, but it appears to be down.
73
Jeff
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