TV turns off after two minutes. Power light blinks for a few minutes then TV comes back on. Turning the power off after the set shuts itself off will cause the power light to blink five times for a minute or two then shut down. I read that a high current draw from the lamp can cause the set to turn off, I do not know if this will work because of the protection circuit but was thinking if the lamp was removed will the set turn on? If so you would still hear the audio and if it did not shut down that would indicate that there was a good chance replacing the lamp would solve the problem. Does anyone know if the set will be damaged by running it without the lamp or for that matter will it even turn on? I have the same problem! Did you replace your lamp and does it work now?

The AKB circuit is not
satisfied with the CRTs cathode current and keeps the CRT blanked. The warmer it
gets, the more likely the circuit is to allow the picture to come on.

AlSo you need to check the Capacitor On PS unit, because the capacitor can dry (
electrolit liquid ) you can try to replace all capacitor High voltage
On ps unit you TV

You can do it with the help of service manual . Else you need to call technican to check the circuit .

The AKB circuit is not satisfied with the CRTs cathode current and keeps the CRT blanked. The warmer it gets, the more likely the circuit is to allow the picture to come on.

AlSo you need to check the Capacitor On PS unit, because the capacitor can dry ( electrolit liquid ) you can try to replace all capacitor High voltage On ps unit you TV

You can do it with the help of service manual . Else you need to call technican to check the circuit .