"Jerry G." <jerry...@hotmail.com> wrote in message

>I have not worked on your model of set, but from past expeience I
> found that a defective lamp can damage the ballast, and or the
> starter. A defecive ballast can also cause a lamp failure.

> In many systems the starter is part of the ballast supply.

> Jerry G.

> --

> You may end up having to change the two together to fis this problem.

> Jerry G.

> __

> Chris F. wrote:
>> Me again with this miserable Zenith DLP TV. I made a post about this
>> about
>> a month ago regarding lamp replacement, I was able to do it successfully
>> and
>> returned it to the customer. A few weeks later the customer brought it
>> back,
>> this time with a different symptom; the set tries to power but makes a
>> buzzing sound, and shuts off.
>>   With the front cover removed, I soon saw the source of the buzzing
>> sound.
>> A small round white component off the HV transformer (looks something
>> like a
>> large diode) lights up bright blue appearing to arc internally. The lamp
>> does not power up at all. I checked the lamp and it is fine, so at this
>> point I'm suspecting a bad ballast...... but with replacements costing up
>> to
>> $200, I sure hope it isn't.
>>   Thanks for any advice.