The xmas cut-50 - think I know what's wrong...

[daleyd]

Good find, hope you have some success with the repair! I bet it smells lovely !!

 

[roofman]

parents had the same thing for months on end, eventually the builders stripped most of the tiles off...and found a tear in the felt that hadn't been noticed and was letting the water in and allowing it to percolate down.

Tell the builders The felt is not there to keep the rain water out..thats the tiles job...The felt is a vapour barrier.

 

[roofman]

well thats what the old man told me anyway...they did something with the felt and no more leaking...*shrugs* <not a roofer>

 

[skotl]

On the roof, they're due back tomorrow.

On the plasma cutter, jeez - these diodes are bl**dy hard to find. They're "ultra fast schottky 2000V diodes" and the closest equivalent I could find are NTE525s.
Nobody stocks them in the UK so I've had to order six (minimum quantity) from RS, via their American stockholders. £23 and ten days delivery

Still - if it fixes it, it'll be worth it. And if anyone else suffers from a similar problem, there will be four spare diodes available!

Oh, and local Mapins stock the 1k/5W resister for 89p so that's not a problem.

 

[Parm]

Cheers - it's only a year old (and the roof leaks, but the builders are coming back )

I wanted a steel worktop - imagine what a great workshop and welding table all that space would have made

I like that idea, if you position the cooker hood carefully it will double up as a welding fume extractor !

 

[skotl]

...and the wife could cook dinner in the garage? Excellent!

 

[3MPS]

First dibs on the cutter if you fix it?

 

[Parm]

On the roof, they're due back tomorrow.

On the plasma cutter, jeez - these diodes are bl**dy hard to find. They're "ultra fast schottky 2000V diodes" and the closest equivalent I could find are NTE525s.
Nobody stocks them in the UK so I've had to order six (minimum quantity) from RS, via their American stockholders. £23 and ten days delivery

Still - if it fixes it, it'll be worth it. And if anyone else suffers from a similar problem, there will be four spare diodes available!

Oh, and local Mapins stock the 1k/5W resister for 89p so that's not a problem.

Try a firm called Mouser, US equvalent of RS, they stock all sorts of wired and wonderful components in strage values. They have an office somewhere near Highwycombe where goods are sent to then forwarded on to so you don't have to deal with customs etc.

I ordered a load of parts for a Thermin I'm building, it's the only musical instrument you play without touching it

 

[roofman]

First dibs on the cutter if you fix it?

Vulture

 

[3MPS]

Vulture

You have to try. Spent a small fortune on my 'workshop' this month.

 

[skotl]

Try a firm called Mouser, US equvalent of RS, they stock all sorts of wired and wonderful components in strage values. They have an office somewhere near Highwycombe where goods are sent to then forwarded on to so you don't have to deal with customs etc.

I ordered a load of parts for a Thermin I'm building, it's the only musical instrument you play without touching it

Yep - tried them (and everyone else on the first two pages of google)

http://www.ebay.co.uk/itm/10x-RGP02...al_Components_Supplies_ET&hash=item27c8d5d782

Wonder if they are the same or diff to the NTE525?

Hmmm... the specs seem very similar to the RP1...

 

[skotl]

Yep - tried them (and everyone else on the first two pages of google)



Hmmm... the specs seem very similar to the RP1...

darn. The one Mr Fuzzy linked to has a slightly lower peak reverse current, and is faster than the RP1. So yeah - that would probably have done it.

 

[J.B. Welding]

Its great when you get inside and find a nice obvious one like that, well done and good luck al keep ma fingers crossed..

 

[Robotstar5]

for example I got some RCBOs, identical to MK RCBOs (only diff was toggle switch plastic was grey not black and Test button was blue not black) otherwise fonts all the same, clips the same....chinese items £8 from a UK seller, MK (made in china) £33+ (prob made in the same factory on the same lines...)

But what was inside them?, one of the electrical forums posted some pics of the internals and the chances of them working under fault conditions was remote

 

[octo0072000]

Don't forget the Proctologists appointment, I can see the reminder for your appointment stuck to your fridge!

Would that be because the missis found out what you was doing in her new kitchen and inserted said board

 

[500e]

Diodes, resistor, + board burnt, resin gone down to glass sub structure, carbon is a great resistor what started the problem get a new board have a shout

 

[skotl]

Diodes, resistor, + board burnt, resin gone down to glass sub structure, carbon is a great resistor what started the problem get a new board have a shout

The board's not burnt. Did you mean carbon is a great conductor? I'll be wiping it down before putting it back together.
It looks like a shorted diode that cause the original problem. For less than £5 of parts it's worth a shot compared to looking for a new board.

 

[gaz1]

id advise doing all the diodes if they went like that the rest may follow suit if they are the same batch of diodes which they will be of coarse

 

[CRB]

I ordered a load of parts for a Theramin I'm building, it's the only musical instrument you play without touching it

Love them Parm. Star Trek and so on. Never got around to doing one myself though. I dare not start one.....just in case.

 

[Parm]

Love them Parm. Star Trek and so on. Never got around to doing one myself though. I dare not start one.....just in case.

I haven't got a musical bone in my body but I think there pretty cool so gonna have a go at building one, I've got all the parts, just need the motivation to get off my backside and get on with it !!