Temperature light stay on even though the Heat sink is cold as ice.
I have a M1400 amplifier for some reason the temperature light stay on. I checked all my pre amp transistor and the output transistor all seem to measure fine. Also the temperature IC U1 (LM35DZ) it's okay. I have changed the LM339 IC as well . Still no changes. Any suggestions.
I have a M1400 amplifier for some reason the temperature light stay on. I checked all my pre amp transistor and the output transistor all seem to measure fine. Also the temperature IC U1 (LM35DZ) it's okay. I have changed the LM339 IC as well . Still no changes. Any suggestions.
You don't say whether it is working or not.
If not working look for the DC offset.
If working, check the supply lines to the sense section.
If not working look for the DC offset.
If working, check the supply lines to the sense section.
the unit stay on but no sound, I have check all my voltages. I have the +-16V and also my +-80V output transistor is stable.
what do mean "If working, check the supply lines to the sense section." because sense section I have changed the LM339 and also check for any open circuit resistors.
what do mean "If working, check the supply lines to the sense section." because sense section I have changed the LM339 and also check for any open circuit resistors.
I have the problem to be an open resistor. R205 100 ohm in the small board. I replaced that the temp light went off. unit work fine
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