MTC 9110 CRT dim help please

[asuitor]

When I got this monitor the flyback was visually arcing, I got a new flyback and did a cap kit on it. The monitor is dim no matter how high I turn the brightness and contrast adjustments (the preset on the board, the flyback and the independent contrast) any suggestions? Any resistors I should check? I know on K7000 a resistor could be removed to improve brightness on the neck board, are there any adjustments like that for this monitor? Also the corners are slightly out of convergence, but the yoke is non adjustable.

[grantspain]

does the sub brightness pot work, its behind the flyback

[asuitor]

Yes, it does adjust the brightness, but even at the highest setting it is still dim. I have seen C206 has caused issues for others being out of spec any thoughts? I did order a set of assorted Ceramic caps (I need them anyways) I am going to swap it out for a new 6.8nf and see if that helps.

[grantspain]

can you read the ac voltage on the heater? you will need a bench meter or super high quality multimeter
where did you get the flyback?

[asuitor]

I purchased the Flyback from Arcade parts & Repair1105-E048/ 2802 6030. I will try to measure the voltage later this week when I have the monitor back up on the bench and the caps come in.

[grantspain]

i use their flybacks so there is no issue on the heater voltage, whats the value of the heater resistor?
is your contrast pot working and how high does the screen go, can you achieve flyback lines?

check R110,R90 and confirm b+ is running at 130v

[asuitor]

I cannot achieve flyback lines not matter how much I turn up the flyback, Contrast and brightness knobs. I do have 131v on B, R110 is testing at 33k. I will check R90 next

[grantspain]

one other thing to check, the heater wire connects to the chassis right behind the flyback on a post which sits proud of the circuit board and can short to the ferrite core of the flyback - I always remove that post and strip the wire from it and solder straight into the through hole