Re: K6100 Focus

John,
        After I can not get it to focus at all after a few minutes after it is turned on. I did notice when I was messing with it last night that I don't seem to get hardly any change at all when I turn the focus adjust. I will double check the B+ voltage right at start up and again 15 minutes late when I can tonight.

Chuck

On Jul 6, 2012, at 10:55 AM, John Robertson wrote:

> Joey Oravec wrote:
>>
>> Did you replace the HV pot, and if so did you use a high voltage probe to readjust the high voltage to 19kV? This is the most common screwup since that pot, if replaced, must be adjusted to generate proper high voltage.
>>
>> If not, I'd suggest finding another collector locally with a CRT tester who would be willing to run the tests and make sure that the tube tests good.
>>
>> -joey
>>
>> On Fri, Jul 6, 2012 at 10:17 AM, Chuck <chuck@localsurfer.com> wrote:
>> Anyone? Still lost on this one.
>>
>> Chuck
>>
>>
>> On Jul 4, 2012, at 10:48 PM, Chuck wrote:
>>
>> > Hey all,
>> > I have a K6100 from my Tempest that I did a full rebuild on with all the bells and whistles from Bob Roberts. All seems to have went well except that it now will not stay in focus. I tried swapping out the flyback with another one and the problem is still there. I have looked at the pins and socket on the neck and neck board and they all seem to fine, no signs of corrosion. The connector that goes from the high voltage cage to the neck board is not at issue as far as I can tell, there isn't any changes when I wiggle it around. The weird part is that when I turn the game on it is perfect for a couple of minutes and then drifts out of focus to about the same point all the time. I thought it might be a heat problem, but if I turn the game off for just a few seconds and right back on, it is in good focus again for a couple of minutes. No time for it to cool off. I miss playing my Tempest.
>> >
>> > Thanks,
>> > Chuck-
>
>
> If you adjust the focus after it has warmed up does it still drift?
>
> You can check the lower output voltages from the HV unit to see if they are stable as well (start with measuring them when first turned on, then check 15 minutes later) - there may be a problem with the voltage regulator as a result of your rebuild, or just random failure occurring at the same time.
>
> John :-#)#
> --
> John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9
> Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, VideoGames)
> www.flippers.com
> "Old pinballers never die, they just flip out"

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Received on Fri Jul 6 12:34:15 2012