ctc195b rca projection t.v

hi, i am hoping someone can help me out here, i am repairing a ctc195b chassis rca projection t.v, i replaced the flyback and all seemed ok,

3 hours later, i loose the sound, and cannot seem to program the set,.i did the tuners over and alll grounds checked voltages on sound ic seem to be ok,.as for the rest i am lost, and no diagram either, so kind of hard to trace it out,.