Hi Folks !
This is the Power Output to the speakers on One Channel on a Stereo Power Amp ! D100 and D200 are bolted to the heatsink along with another pair of D100 and D200 for the stereo other channel ! The power amp seems to be working fine for audio and at the moment I cannot hear a major problem but the Heatsink gets hot on the back even withour ANY signal ! I know this to be the case as I have a duplicate Power Amp which stays cool pretty much not even without a load but with a load, so I know this one is NOT normal ! I can feel from D100 and D200 just by touching them that two of them on the same channel are getting hot while the other two remain cool ! However this heats up the whole of the heatsink so for sure there is a problem somewhere ! Have ordered some new D100 and D200 power transistors but looking at the forums here, it appears that it could be caused by something else !
From the circuit below, can anyone offer any guidance as to what may be causing D100 and D200 to heat up !
Thanks Folks ! Best Regards Paul
This is the Power Output to the speakers on One Channel on a Stereo Power Amp ! D100 and D200 are bolted to the heatsink along with another pair of D100 and D200 for the stereo other channel ! The power amp seems to be working fine for audio and at the moment I cannot hear a major problem but the Heatsink gets hot on the back even withour ANY signal ! I know this to be the case as I have a duplicate Power Amp which stays cool pretty much not even without a load but with a load, so I know this one is NOT normal ! I can feel from D100 and D200 just by touching them that two of them on the same channel are getting hot while the other two remain cool ! However this heats up the whole of the heatsink so for sure there is a problem somewhere ! Have ordered some new D100 and D200 power transistors but looking at the forums here, it appears that it could be caused by something else !
From the circuit below, can anyone offer any guidance as to what may be causing D100 and D200 to heat up !
Thanks Folks ! Best Regards Paul