astron 70 amp ps. problem  | | 
10-10-2009, 12:31 AM
| | Senior Member | | Join Date: Jun 2006
Posts: 300
| |  astron 70 amp ps. problem
its a new ps but it gets realy hot on the bottom and the fan has never come on,the lites on the meters dim with a whistle on the mic ,even on low power of the radio..is this normal ? the radio is a 2970n2 200 watts. seen on the back of the ps a bolt 2 nuts and star washers and the word chassi by it ..is this for a ground wire ? is it possible there is a fuse for the fan that has blown .. noticed also the bottom of the ps gets hot but the heat sinks on the ps stay cool..
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splash.. |
10-10-2009, 02:59 AM
| | Senior Member | | Join Date: Mar 2005 Location: england
Posts: 1,022
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when we run astrons on 240v 50hz mains the transformer gets hot even without any load on the psu, the case under the transformer can often be much warmer than the heatsinks,
be carfull messing with the fan, it is powered from mains voltage,
some info and schematics, Index of Astron™ Power Supply Information at www.repeater-builder.com
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10-10-2009, 08:28 AM
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Bob85..the ps has a 3 prong plug,,should the ps be grounded also..my radio,swr meter,n antenna are already grounded....
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splash.. |
10-10-2009, 11:12 AM
|  | Senior Member | | Join Date: Aug 2005 Location: Under a coconut tree in the Carribbean sipping on white rum and coke!!!
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Quote:
Originally Posted by Splash1  its a new ps but it gets realy hot on the bottom and the fan has never come on,the lites on the meters dim with a whistle on the mic ,even on low power of the radio..is this normal ? the radio is a 2970n2 200 watts. seen on the back of the ps a bolt 2 nuts and star washers and the word chassi by it ..is this for a ground wire ? is it possible there is a fuse for the fan that has blown .. noticed also the bottom of the ps gets hot but the heat sinks on the ps stay cool.. | I had the same problem with mine running hot and the fan not starting. I jumped out the thermal switch or thermostat so the fan runs all the time. Now its cool to the touch. Gets luke warm under load. That lug mark chassis should be connected to your station ground.
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Yaesu 101E
Signal Engineering lightning 6 quad Antenna on a 60FT crank up tower. |
10-10-2009, 01:05 PM
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Drifter,,do your meter lites dim on mod also ? a local here told me mebe my house wires werent big enough so i bought a 12 gauge 40 foot extension and ran it straight to the plug on the washing machine and still have the same problem..
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splash.. |
10-10-2009, 02:30 PM
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whelp,,i called astron and this baby is going back whilst its still under warrenty..dam shame ,, after all the good things i read about astron power supplies..buyer beware....
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splash.. |
10-10-2009, 02:34 PM
|  | Prestigious Member | | Join Date: Feb 2008 Location: too close to mexico
Posts: 1,867
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Quote:
Originally Posted by Splash1 Drifter,,do your meter lites dim on mod also ? a local here told me mebe my house wires werent big enough so i bought a 12 gauge 40 foot extension and ran it straight to the plug on the washing machine and still have the same problem.. | The problem could be there are too many services running off the same transformer, to check set a volt/ohm meter to ac mode at a range that will read at least whatever your line voltage is and test your ac line/supply voltage at the breaker box when the radio is under load and see if your voltage drops significantly and if so then call your power company and explain your findings.
If you're saying that the lights on the radio dim under power that is just a fault of the rci line off radios, mine does that also.
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I  U 212 |
10-10-2009, 02:42 PM
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Mack..its not the lites on my radio that go dim,,its the lites on the meters of the power supply itself..
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splash.. |
10-10-2009, 02:52 PM
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Quote:
Originally Posted by Splash1 Mack..its not the lites on my radio that go dim,,its the lites on the meters of the power supply itself.. | Well I wouldn't worry about that if your house lights are not dimming.
A 70 amp supply will run that radio no problem especially since the radio only uses 14 amps or less.
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I U 212 |
10-10-2009, 04:30 PM
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Mac..the meter on the astron shows drawing 45 amps with a whistle..
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