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For animals who creates a trouble on an electronic board see here (sorry not in english but pictures); http://alain.mionnet.pagesperso-orange.fr/daikin.htm Where a VRV Daikin (external air

I've had this 2225 for quite a while and it has always worked flawlessly. Then, yesterday, it was standing on the rear feet (screen upwards) and got knocked and it toppled and the handle struck a

John, The -12V rail is spot on, and so is the +12. I did do a quick and dirty diode test on Q1197, which showed two good diode drops, but that was in circuit and at low. I suppose it could be breaking

You could just rewire the existing dual pot so that the working fine adjustment becomes the coarse adjustment and replace the non-working pot wth two 5.1k (or even 4.7k) fixed resistors in series.

Hi Paul, If I recall correctly, the pins are a plastic attachment pin, which has a coarse thread. I think I recall that I grab the head with a pair of sharp diagonal cutters, and pry. It will rotate

That makes sense - but which one is it and how to check the enable signal is being sent to it? D.

Let's hope it's not Q1197 gone s/c as it's a pig to replace (mechanically). With the EHT unpowered at least you can trouble-shoot the PSU. NB the -12V is the reference for both +75 and +12V rails so

I think I fixed it, but I'm a bit puzzled by how I fixed it. I tried loosening and retightening the two set screws on the main knob, doing so in an "unbalanced" manner. After a couple of tries the

Hi Gordon, Didn't anyone you worked with, at some point, use the synonymous terms "dielectric soak" or "dielectric absorption"? If not they sure should have. Both are pertinent here and oh, so,

Ewwwww, I can only imagine... Sean

The dog definately survived. I think the fact the zap was 15 KC (skin effect) and the cabinet being? wood kept the internal current low. ?? I have never heard of dogs or cats being kiled by TVs,

What might be even more amazing about that story, is that you didn't have to scrap toasty dog out of that set. Seriously, a dog that small is lucky to be alive after that! Sean

I suspect the dual 20k will work okay. Bob

Hi, again, I am still wondering about the "Trace Position" Front Panel Pot on my Sony/Tek 335. While there appears to be no trace when the 335 is powered on - most likely this shows a failure in a HV

For a TV repair tale, I have a good one to share. I had started work at a TV shop when I as in high school.? Soon I was on a repair call with another tech, the set was an RCA 21inch round tube color

Hi Dave, From my experience, I believe it did accumulate a charge. My company creates high voltage/high amperage power supplies for use in our products. One of the things I was involved in at my work

I can never leave well enough alone ;) So I redid my pretrigger circuit. Starting with a 1 MHz crystal oscillator, I divided by 2 since the avalanche pulser takes over 1 us to charge back up. (I've

When I pull the SEC/DIV knob to set the B time base I am only able to freely rotate the knob about eight tops before it starts to bind and drag the A time base setting along with it. Once it has bound

And the algorithm is the same regardless if it's HP or Tek, so either can be used on either. Paul -- Paul Amaranth, GCIH | Manchester MI, USA Aurora Group of Michigan, LLC | Security, Systems &