CS 800 (1992) Power Supply
CS 800 (1992) Power Supply
Hello, a friend of mine has a CS 800 that is a 1992 version and his power supply has died. Does anyone have any ideas where I could get a replacement power supply or information on how to repair it? Thanks.
Re: CS 800 (1992) Power Supply
I am having to figure out which version was 1992. Is this the one with the large screened vent in the front panel?
In any case, not sure what you mean by bad power supply.
If it doesn't power up at all, we need to check the circuit breaker on the rear, and the power switch as well as the power triac. It is extremely rare that a power transformer would fail in one of these. There is a large high current bridge rectifier and a couple large filter caps. If they fail it usually results in the breaker blowing.
In any case, not sure what you mean by bad power supply.
If it doesn't power up at all, we need to check the circuit breaker on the rear, and the power switch as well as the power triac. It is extremely rare that a power transformer would fail in one of these. There is a large high current bridge rectifier and a couple large filter caps. If they fail it usually results in the breaker blowing.
Re: CS 800 (1992) Power Supply
Yes it is the one with the large screen on the front of it. I will check those things and see but he insists its the power supply. Ill break out the multimeter to check it out. Every clue helps thank you for the reply.
Re: CS 800 (1992) Power Supply
OK
Whenever someone tells you what is wrong with an amp, you need to consider what he knows about electronics. In the context of this amp, there is no "power supply" as some sort of unit inside the amp. Power supply in there refers merely to the parts of the circuit that power the rest of the circuit.
An analogy might be automobiles. Someone could refer to everything under the hood as "the motor", even though the battery and the radiator and the brake master cylinder are not parts of the motor.
The first question is this: what does the amp DO? Does it sit there dead as a brick? or does it light up but makes no sound in speakers? Does one side work and not the other?
Whenever someone tells you what is wrong with an amp, you need to consider what he knows about electronics. In the context of this amp, there is no "power supply" as some sort of unit inside the amp. Power supply in there refers merely to the parts of the circuit that power the rest of the circuit.
An analogy might be automobiles. Someone could refer to everything under the hood as "the motor", even though the battery and the radiator and the brake master cylinder are not parts of the motor.
The first question is this: what does the amp DO? Does it sit there dead as a brick? or does it light up but makes no sound in speakers? Does one side work and not the other?
Re: CS 800 (1992) Power Supply
When I turn my cs 800 on the power light turns on for a sec and then turns right back off. What should I check first?
Re: CS 800 (1992) Power Supply
When I turn my cs 800 on the power light turns on for a sec and then turns right back off. What should I check first?
When I disconnect the B channel amp the fan starts to work but the power light still doesn't light up
When I disconnect the B channel amp the fan starts to work but the power light still doesn't light up
Re: CS 800 (1992) Power Supply
Just my $0.02, but the best way to repair a 25-year-old low-powered heavy boat anchor of an amp is to heave it into the dustbin and get an IPR2 series amp to replace it. But, that's just my opinion. Good luck!
Re: CS 800 (1992) Power Supply
To test it's supply is ok, unplug the connections that feed each amp module. Next solder a pair of 4k7 say 5w resistors on each side of the filter caps these will bleed the high dc away.
Next power up and read the dc volts. If the reading is stable say plus and minus ie 60dc then you know it's ok.
Switch off and allow the voltage to drian away.
You can cold check each amp module for things like shorted parts or down load the schematic.
Good luck for now.
Next power up and read the dc volts. If the reading is stable say plus and minus ie 60dc then you know it's ok.
Switch off and allow the voltage to drian away.
You can cold check each amp module for things like shorted parts or down load the schematic.
Good luck for now.
Re: CS 800 (1992) Power Supply
I recall the voltage being 80 plus and minus on these amps..