When you say 'checks out', explain exactly how you are testing everything.
Anything is possible, but I've literally only ever seen 5 or 6 bad 6100 flybacks (in hundreds of rebuilds), and in all cases they were visibly melted on one side, usually the side closest to the focus block.
I have measured resistance on every resistor.
Replaced all electrolytic caps, and triple checked orentation. Removed all ceramic and mylar caps to check capacitance.
Replaced Q901/902 with MPS A06. Replaced Q903. Checked the remaining Transistors with normal transistor testing procedures. The case transistor is not shorted to the cage.
Replaced T901.
checked every diode. Replaced D901 and D902
Preset the Potentiometer to 5.5K
I replaced the 555 timer, then grounded my positive lead, placed the meter on Diode test, and independently checked each leg with the negative lead. All pins are .5-.7 volts, except pin 1 which is on the B- plane, so I'm not worried about it.
I removed the flyback and here are the measurements.
3-6 = .8 ohms
6-9 = .8 ohms
3-9 = 1 ohm
I thought this was normal so I'm not sure where to measure in order to get 18 ohms.
I also installed fuses in line with R901/907/917. The one at R901 blew along with the smoked R912.
I have reflowed the connections.
I feel like I have been completely through this but it is possible I have missed something. Right now I am just going to wait on the flyback.