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SE/30 flyback in the UK

aladds

Well-known member
Anyone know somewhere I can get a replacement SE/30 flyback transformer in the UK?

There are a few available to me on eBay via. international shipping, but they're not cheap!

Just want to exhaust all the options before I'm resigned to buying one from there.

As an alternative, there do seem to be a lot of new flyback transformers available for much lower prices, so if anyone knows the specs required I could always investigate other options!

Thanks :)

 

Instow

Active member
Not easy in the UK for sure, maybe try to pick a cheap eBay deal advertising a dead SE/30 - SE machine, and rob one from there .. sometimes you get lucky, sometimes you don't .... and then again you buy a 'dud' and it has a jewel inside.

 

aladds

Well-known member
Well I was actually surprised to find that the one in my unit works, and was just caked in horrible black dust. I assumed it was broken, but after a good clean it seems to be working fine!

The screen is rather dim, though. Might need to check some capacitors on the analogue board.

 

BadGoldEagle

Well-known member
aladds, I had the same problem on my SE/30 and I do think the caps on the AB are to blame. (The LB and PSU have been recapped) and I'm still experiencing problems.

What you can do to temporarily fix the problem is turn the "knob" on the side of the unit, on the AB, which the case off. Look for Brightness / Cut off.

Be careful though! You will need an insulated screwdriver to turn this knob. It's also better to do this with the machine off. Yes you'll have to guess how much you turn it to make it brighter but it's certainly safer.

 

aladds

Well-known member
I have a good set of isolated screwdrivers, so I actually gave this a go (also focus as its not consistent across the screen) but neither really helped. The focus knob can put the middle or the outsides of the image into focus, not both, and the brightness cutoff even at maximum doesn't give a very bright picture, which is a shame.

 

aladds

Well-known member
As a point of interest, I took to measuring voltages of things I considered might be dangerous using a 40kV probe (1000:1 reduction to my fluke) and hardly anything seems to be charged, so I think the bleed resistors are still operational. Still do the discharge procedure, though, as I like to be safe :)

 

CC_333

Well-known member
Does your CRT have any noticeable phosphor burn-in? Sometimes the CRT itself will just get dim with lots of use, as a consequence of burn-in.

c

 

aladds

Well-known member
It does have slight burn-in. But it's not as noticeable as all that. I didn't realise it had it at all until I looked at it when it was off and sunlight was shining in the window onto it.

 
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