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Member postings for flintlockand steel

Here is a list of all the postings flintlockand steel has made in our forums. Click on a thread name to jump to the thread.

<< First < Prev 1 2
Thread: speed control pcb for Clarke CL300 lathe
04/02/2011 15:52:40
Is there anything to choose between these components?
I looked at RS and didn't see the 2SK790 ,
The IRFP450 were £3.34 each and the STW20NK50Z £1.99 each.
How often does this fault occur? I'm just wondering if it's worth getting a second set.
Finally the replacement fuse holder is inside the box, and inaccessable for a quick change if it pops. What's the name for the style of holder normally employed and the fuse rating?
 
Many thanks
Jon
04/02/2011 15:32:55
Having now got the board out and tested I find 1 appears to be open circuit i.e. the reading just falls away to 0. The other reasd .2 on the 200k scale (digital meter). I was once a PCB draftsman but never fathomed the logic of operational circuits so hope I'm setting and reading this meter correctly
04/02/2011 13:48:51
This is the board my 300 has

Note that the old fuse carrier has been replaced.
04/02/2011 11:19:20
Hi John
My board looks like a little different to the one you show, the heat sink is at the top. I'll post an image later on from which you may be able to determine age or other relevant specifics.
 
Jon
02/02/2011 20:19:58
Hi
Not sure if this follows on exactly but I have a CL300m variable speed, except it's not.
It's either all or nowt. I was suspecting the pot but skimming the replies here, could it be the board?
I haven't taken it out so I don't know what number it is but it has large components standing off and a couple of large square yellow things to the left. Heat sink top.
I'd just like to swap it and get the machine running again asap.
Any ideas?
Thread: Clarke CL300M
02/02/2011 18:28:52
Hello, 1st posting here.
I have a Clarke CL300M but the speed controler goes from nowt to flat out. No variability. Is this the rheostat / pot' ? Where can I get one?
Otherwise all is sweet.
<< First < Prev 1 2
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