[vcf-midatlantic] BK 467 CRT rejuvenator calibration question
coreyvcf at gmail.com
Mon May 13 20:22:42 EDT 2019
Well a bit more poking around and there is a reference to a possible bad transistor in the service manual if you don’t get full range on the tracking function. I’m going to pull the transistor in question tomorrow and check it. Maybe the manual is clear and my 467 is broken. The guy I got it from must not have been able to get it running because he had a lot invested in CRT adapters. I have a complete set of adapters and then some which look new and he did state he had them made.
Oh well a simple recap has now turned into a project.
Sent from my iPhone
> On May 13, 2019, at 10:19 AM, corey cohen <coreyvcf at gmail.com> wrote:
> Meters are fine.
> The issue is what is the correct needle positions for doing the calibration. The manual’s “English” isn’t clear.
> corey cohen
> uǝɥoɔ ʎǝɹoɔ
> Sent from my iPhone
>> On May 13, 2019, at 7:45 AM, Matt Patoray via vcf-midatlantic <vcf-midatlantic at lists.vcfed.org> wrote:
>> Did you first mechanically zero the meter so that it rests at zero when then unit is off, or as close as possible because of parallax error since those are not mirrored meters?
>> Sent from my iPhone
>>> On May 13, 2019, at 7:37 AM, corey cohen via vcf-midatlantic <vcf-midatlantic at lists.vcfed.org> wrote:
>>> I posted this on the VCF forum but got nothing in replies. So I just recapped my new to me BK467 and easily calibrated the Heater voltage. This is my last step to clear my workbench off for a new project arriving later this week.
>>> Next up on the BK467 is the tracking range calibration. The service manual I got online isn’t very clear.
>>> After hooking up the resistor and warming the unit up in setup mode, it says to put the 467 into test mode, adjust the G2 red control till it reads full scale on the meter. I assume that means when it's at 2.0 (all the way to the right)?
>>> Then it says while pressing the tracking button and adjust R23 until it reads the minimum setting. Does this mean 0 on the meter or at the "set tracking mark". I can't adjust R23 any lower than .2 on the meter so I'm hoping it's not supposed to be set to 0.
>>> Any help is appreciated.
>>> corey cohen
>>> uǝɥoɔ ʎǝɹoɔ
>>> Sent from my iPhone
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