Well apparently I will not be sending it back to Bob Roberts for testing. Here is Bob's response to my inquiry. It appears that statistics show I don't have a bad flyback.
Hello bob,
I have a question relating to a past order, and it may have been some
time ago.
I purchased a K7000 flyback for a monitor repair and could never get the
chassis repaired. I recently purchased a flyback tester to test flybacks
before replacement. Usually G07 flybacks get replaced when I do a
chassis rebuild because of the faulty originals. Before purchasing the
flyback tester I was taking the same approach with k7000 chassis because
the flybacks are cheap and I want the chassis to be reliable.
Back to the chassis I couldn't repair. I pulled the flyback and tested
it, and it's also bad. Due to my lack of test equipment at the time I
wasted countless hours and many HOTS trying to solve this problem.
I would appreciate it if I could send this flyback back for you to
confirm it's shorted/faulty. I am not looking for a credit, or
replacement. At this point I would just like to know I found the
problem. Unfortunately I don't have a replacement and I will order a new
one but will wait to hear back from you on this particular unit.
In the future I will test them on arrival and contact you in a timely
manor.
Bob's Response.
As voted on 16 years ago... all sales are final. As for flybacks, they are
one of the few things that I can't test before shipping, but in 55 years of
dealing with flybacks I have never seen a bad replacement nor ever had any
of my techs find a bad one. I can only remember of one that was ever
physically damaged & I cannot say for sure it was shipped that way. My tech
at the time brought it to me with the top snapped off evidently from being
dropped & swore it was in the box that way when he opened it.
I've been around longer than flyback ringers & have tested just about every
new one that hit the market that D'mambro Electronics distributed & have yet
to find an accurate one. They will drive you insane... good shows bad... bad
shows good... they are simply worse than the old time vacuum tube testers
that had about a 15% accuracy! Back in the late 90's I had let about 20 of
the guys send back flybacks at their expense for me to test... the right
way, substitution... because they were soooo adamant that theirs was bad.
Not a single one ever was, so no one spoiled my record. I swore I'd never
waste my time like that again, but about 6 months ago one of the regulars
said he had a bad flyback for sure... absolutely positive... and he said I
just had 55 years of good luck. Then he sent it to one of the well known
online shops to be checked out. He repairs them every day & helps the hobby
greatly, so I won't disclose the shop, but they confirmed that the flyback
was defective... which I had never heard of...ever!!! So I told them to send
it back. I popped into a $15 clunker without doing anything else & it fired
right up! I took my test K7000 rig & removed the flyback & installed it onto
it.... fired right up without incident. Took picks & sent it back to him. I
was told on this & another occasion that a Antec tester had given the false
readings. In this case it turned out to be C36 according to the shop..."C36
had changed values a little and was just enough to keep the B+ off" .
While I cannot test your flyback for you, I feel very confident in telling
you that yours is a 99.9% good flyback. You'd be breaking a long standing
record if it were not. Granted while in the business I only went through
15,000 or so, replacement flybacks without incident, but since retiring
we've more than tripled that number bringing it to about 60,000 lifetime
flybacks with only 21 claims of defective product all disproved. It's pretty
hard to mess up a coil of wire in production... I'd almost have to say it
would have to be something deliberate to have a mfr'g defect.