Heres a quick writeup on the 7 piece focus block kit
(Note: You have to get your own Focus block from
guy on eBay)
He has 31 left today, don't mess around
Apply a thin layer of silicone glue in the corner of the groove
Layer one in place
Keep going, no need to wait for the glue to dry

Solder the 3 x small leads and trim them.
Fit the 3 x large copper leads, and solder. They are handy to hold the copper when it's hot
Then remove the white sleeves for now
More glue, between each layer
May be best to clean as you go
Give it a good clean with isopropyl alcohol or equivelent
Trim down the copper to around 3/8" & trim & fit the 3 x sleeves hard up to the board
Square it up and inspect, clean where necessary

Let it dry before fitting it or using it
I'm sure it will separate if you apply screws to the bottom otherwise
Once dry, solder your 4 wires on then use heatshrink
- 2 layers on the supply from the flyback (pin 1)
- 2 layers on focus 5000V (pin 2)
- 1 layer on the 600V Brightness (pin 3)
- no layers on bottom pin 4 to violet (pin 4)
Note: The 2 x top leads are reversed compared to an Amplifone
That's why I marked the points on the focus kit board
Sometimes you need 33M ohm resistors (1w) on the supply pin (In series, in 2 x layers of heatsink)
Sometimes you need 66M, and even 99M ohms 1W to get the focus to adjust full range

Start with 2 x 33M or a 68M resistor as this is the most common correct range.
Don't shrink the heatshrink down until the focus is in the right range on the screen
Here is the link (
PAT9000 thread) of one working, if anyone wants a read
And 3 pics from that thread
Inside the sanyo block
