As well as dealing with immediate problem and other issues, like perished rubber drive bands to hold (just ) the tank in place and sometime thereafter free to fall amongst all and sundry. The BDV64B and 65B are presumably held with epoxy to their vaned heatsinks, nothing mechanical. 30 years integrity of epoxy? I assume I'm duty now bound to add fixings, after trying to prize apart one with fingernail insertion, still holding. Was this a common practice then and reliable since, or would it be zinc oxide white goo bonding, to some extent, over 30 years and original reliance was just on the transistor leads not bending with vibration etc ? The vanes are screw fixed to the pcb but not transistors to heatsinks
- posted
9 years ago