i had the original pcb from ages ago so i modified it (at least i tried) with audioguru's changes. however i am having the following problems: voltage regulation seems to work, but when the current goes over 1 amp, i have oscillation on the 3055s and c7 gets very hot u1 gets a bit warm the current limiter works in a weird way, i mean, it limits current up to the middle position of the potentiometer then it allows current again. the led has a constant dim light and when the current limit kicks in it lights fully now, i should mention that i could not find tle2141 so i used ca3140, the closest i could find here also, i tried a higher value for c7, it reduced the oscillation, but it's still there i replaced the d13,d14 with the original 5.6v zener, before, the led burned up i am suspecting i have done something wrong modifying the old pcb, or the ca3140 is not proper for this i might try this on a stripboard if i have the time.. any suggestions?..