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Discussion Starter · #1 ·
Folks,

I've acquired a BD808s and last night balanced it on a couple of pallets to see if it was working / how good it was, etc..

It all works fine except (there had to be a except, didn't there!)


It's reading just over 2000 hrs runtime and appears to have minty tubes but the focus is sooooo soft that even the cat want's to sit in it!

I managed to get a nearly sharp picture by cranking the EM focus midpoint setting to 100% but it's still soft.

Do I need to twiddle a pot or three inside somewhere?


Other than soft, it's a great picture, nothing to complain about.

 

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Maybe not FIRST.

Maybe first you check that your actually seeing a problem with electronic focus, look into the tubeface and see if the test pattern is sharp on the tubeface. Maybe the scheimplfluge is snookered ?

If its soft on the tubeface, check your electronic astig and see that it isn't maxed out in a way that will negatively affect your electronic focus.

Did you reset everything to midpoint before you threw up a picture ?
 

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Discussion Starter · #4 ·
Yup, it looks soft when looking into each lens. I set to midpoint to remove any legacy settings. Data 808s doesn't have scheimplfluge I thought.

I suspect these may be new tubes as they really are 100%. Perhaps they were replaced recently and the tech didn't spend much time doing it? Who knows

Anyway, over the weekend I'll try the mechanical tweak of the neck hardware.


I must say, I'm not looking forward to sticking my hands into thousands of volts - got any suggestions which are the hot bits to avoid?
 

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The yokes have about 40 volts going through them. NO risk of shock from them.


Heck, how do you think I get my brain started every morning? Stick both hands on the end of a Marquee HVPS and fire the set up!

 

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Wear a rubber glove..........................
 
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