Help with a B&K 1077PAL - Videokarma.org TV - Video

AlanInSitges · #1 12-09-2018, 05:08 AM

Yeah, I am (or was, I guess) in a PAL country. Most of the sets in my growing pile are CCIR pre-PAL, though I do have a pre-NTSC Predicta, and a goofy-looking bright orange space-age Telefunken PALColor 616. I mailed B&K about this thing asking if they had any documentation, and they told me they never made a PAL version.

To answer kf4rca's questions, yes the filament is lit, and the ion trap is in place and hasn't been moved from its original position as indicated by the red mark and copious adhesive. There is no high voltage. I found the original manual and it actually has a brief description of each of the circuits so I'm going to start troubleshooting like it was a regular TV with no HV and see where that gets me. I'll cross the why-are-there-two-horizontal-output-tubes bridge when I get that far.

init4fun · #2 12-09-2018, 08:18 AM

Quote:

Originally Posted by AlanInSitges

I'll cross the why-are-there-two-horizontal-output-tubes bridge when I get that far.

Quote:

Originally Posted by Electronic M

...It is the same basic circuit concept as a TV H system except for a second H output tube to safely drive an external flyback.

Hi Alan , Tom has already disclosed why there is a second horizontal output tube , one of them is to drive the B&K unit's own (internal) flyback , and the second is for driving an external flyback , presumably in the TV set being repaired by the user of the B&K .

Electronic M · #3 12-09-2018, 10:09 AM

Quote:

Originally Posted by init4fun

Hi Alan , Tom has already disclosed why there is a second horizontal output tube , one of them is to drive the B&K unit's own (internal) flyback , and the second is for driving an external flyback , presumably in the TV set being repaired by the user of the B&K .

Yup!

Kevin Kuehn · #4 12-09-2018, 12:19 PM

Quote:

Originally Posted by AlanInSitges

I mailed B&K about this thing asking if they had any documentation, and they told me they never made a PAL version.

That's funny. I hope you emailed them a picture of the impostor piece of equipment. Possibly there was another B&K division over near your country that made them.