old sony ptv

hi, iam restoring this tv model KPR4110, SCC-643A-A. i have a convergence issue (red). replaced both STK's, also several out of tolerance res. checked all the electroylectics on the conv, bd. with esr meter, all o.k. don't have the service manual. can anyone help? thanks. p.s. this tv does not have any pico fuses.