k4600 dead

paul400

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working on this 4600. fuse was blown and HOT was bad.replaced those and recapped the thing. powered it up and am only getting 12volts at the VR and HOT. replaced the flyback and plugged in a new VR and still the same results. also jumpered a filter cap to the old one just to cover the bases whats the next step and where is the best place to check the B+ on this thing?.
 
There's a big resistor in the PS section. Check it to see if it's still good...
 
resistor tested good, the issue is definently on the main board since i swapped out the daughter cards including the whole side where the voltage reg sits. checked for cold solder and didnt see any cracks. next????
 
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