Quote:
Originally Posted by timmy
 well here goes yet another thing going on here with this set, im sure this 21fb is tired but what its doing is after turning it on the picture appears focused for about 5 seconds then the picture is totally out of focus for about 3 minutes then it clears up nice. its got the clone ctc15 chassis so im thinking the crt, focus rectifier, otherwise i dont know. the flyback is new so it wont be that. any ideas would help, thanks |
Try a new HV rectifier and regulator tube.
Remove the CRT socket and check the focus pin for corrosion. It also might be a bad 66 meg focus resister.
I also wouldn't doubt, the CRT is acting funky.
When I replaced the flyback in the clones, I always replaced the focus rectifier stick.