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No lights now, do I need more parts? Please help.

I have a problem now when that when I turned it on now (a week later) there is not any picture or lights. I ordered the opto-coupler 7412 and the other 2 ic's 7406 and 7413 and coolant for the bulbs.
Is this a seperate problem from the picture starting out small and then warming up becoming normal size? Do I need to order a Flyback now or could this still be related to the opto-coupler?
I really need to become a premium member on here, Do they accept PayPal?
Thanks.

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  • Alvin Moats Sr.
    Alvin Moats Sr. May 18, 2008

    Well the power light comes on but not the crts. Just wanteed to make sure I let you know this.

  • Alvin Moats Sr.
    Alvin Moats Sr. May 18, 2008

    Sorry The power LED does come on and there is still power coming into the TV but the CRT'S are not lighting up at all anymore. I didn't want to leave it on for too long though because I didn't want to cause any other problems. Thanks I will check the fuses If I can locate all of them without the manual. So could this be the flyback or still the opto-coupler and other 2 ic's the may be out compltely now. Could this be related to resistors on the convergence board or anything on there? Because that is the only board I checked the resisters on and none were open.

    Thanks for all your help, I really appriciate it, I am 38 and disabled and this is my only hobby I have to share with my son now. So your help is really appriciated.

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The opto coupler is usually related to just the pic starting out small then filling out after warming. The flyback wouldnt stop the power led from coming on unless the HOT shorted but that would blow a fuse. Check your fuses. You can sign up here for free and your solutions are what gives you your ranking on the site. Premium assistance is a service that requires payment, but I am not sure how that works as I try to help people for free on here

Posted on May 18, 2008

  • Sonny Berry
    Sonny Berry May 18, 2008

    Do you have audio? If you have audio it could be something as simple as the Vertical output not getting contact which would shutdown the crts as a safety issue. Try reseating the stand up boards on the signal board where the Convergence Ics are located

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