g07 sync

mike11

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i have one here i cant get sync on and its giving me teardrop black spots across the top.... chassis was just capped.... horiz wont lock and when its adjusted to full screen it distorts and horiz is a mess wont come close to locking or even stabalizing..... b+ is right at 119.8-9

x305-6 seem to test ok in circuit... ic 501 was changed.... im running out of ideas here

any input is appreciated

thx
 
i am assuming you reflowed the input header pins?? have you checked or replaced the HF pot?
 
a couple of pics would help when you get time.

pics of:
6 and 3 pin wiring to the chassis
bottom of chassis where those points connect
picture of the actual problem as it appears on the tube

X303 and X304 can cause issues , (tested out of ciruit, not in)
R517
R525
(that general area of resistors)

The above is concerning visual issues not the sync issue.

oh yeah and confirm if you have tried a different g07 chassis on that tube and it works perfectly or not?
 
i cent get pics to load here right, phone wont let me resize them........ wiring is fine as well as traces on the sync and signal pins.....this chassis is a friend of mines...new game didnt know the history of it.... has horiz and vert sync missing it appears.... brought the chassis back here and hooked it to my bench tube with TPG, using both pos and neg sig, no change, same thing..... recapped it, set B+ went over all the sync circuitry, swapped IC, still missing something somewhere, inspected very closely no broken traces or issues there

does anyone have a complete list of components in the sync circuity ?
 
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