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-   -   BO Beovision 8800 - no spot killer (https://www.diybanter.com/electronics-repair/106376-bo-beovision-8800-no-spot-killer.html)

Phimor May 16th 05 02:57 AM

BO Beovision 8800 - no spot killer
 
Hi,
I was hoping for some insight by more experienced people on this one:

Short version:
After repair (HOT) TV works fine, but spot killer is inadequate. Bang
and Olufsen

Beovision 8800, approx 25 years old.

Long version:
I'm a complete newbie with this. I got the TV for nothing, and using
Sam's FAQ I diagnosed a blown HOT (BU208), replaced it, and the fuse,
and presto the set came on. A slightly bright picture and inapropriate
range in the brightness control got me to experiment with the pot on
the neck of the tube. Adjusted to a better range, and I now can get a
black screen when the brightness is set to zero. The picture is stable,
bright and I found a 'one for all' remote to work (most)of the user
functions.

So far so good. The only disappointment is a bright spot for a few
seconds after the set is turned off.

Turning off, the screen goes dark for a split second, then the spot
appears, also for a short time (less than 3 seconds) and fades off.

Now, given the age of set and the outrageous price I paid for it, and
my complete inexperience in the topic, maybe I should think myself
lucky and leave at that. But I would be surprised to think a BO set
would have this 'feature'. Also, maybe, I think a total fix might be
within reach, only if I new where to look (a weak capacitor in the
horizontal oscillator supply, for example).

Call me sentimental, but this is the first TV I have fixed. It would be
nice to get it 'just right'. Also I hate sending stuff to land-fill
unnecessarilly - I assume the tube will not last long before a 'burn
in' in the centre of the screen.

Please help me finesse this job and indulge my obsessive tendencies ;-)


Thanks

Philippe


Jørgen Christensen May 16th 05 06:49 AM

Hi Philippe.

As B & O is made in Denmark, I would recommend you to post your problem in
the danish group:
dk.teknik.tv+video
There are some guys who are very experienced with B & O and they might be
interested in your vintage problem.
Best of luck, Jørgen.

--



Jørgen Christensen May 16th 05 03:48 PM

Hi Philippe.

Glad you changed back to your native english. Your translation machine
really is funny.
Anyway you are already connected to two of the experts on B&O, namely Otto
J. and Ole Geisler.
Hope they will solve your problems.
Best regards, Jørgen.

--
Med venlig hilsen, Jørgen
"Jørgen Christensen" skrev i en
meddelelse . dk...
Hi Philippe.

As B & O is made in Denmark, I would recommend you to post your problem in
the danish group:
dk.teknik.tv+video
There are some guys who are very experienced with B & O and they might be
interested in your vintage problem.
Best of luck, Jørgen.

--





Phimor May 17th 05 08:07 AM

Thank you Jorgen,

Yes the dangers of automatic translation...I should've known better.

Reminds me of a story about translating 'hydraulic rams' as 'water
sheeps'.

Cheers
Philippe



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