fuse help

Author
Discussion

jamoor

Original Poster:

14,506 posts

217 months

Sunday 3rd May 2009
quotequote all
My microwave stopped working randomly, so I changed the fuse, no luck.

I opened the appliance and spotted a fuse, this is slightly longer than a normal fuse and it says

RS
FF8A
AC 500V

on it, I have tried searching the RS site for the ref FF8A to no luck, anyone know where I can find this fuse?

mgtony

4,027 posts

192 months

Sunday 3rd May 2009
quotequote all
Try www.cpc.co.uk I'm looking at their catalogue, they seem to have loads.

NDA

21,775 posts

227 months

Sunday 3rd May 2009
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That's a thermal fuse I think. Not sure where you get those...

maser_spyder

6,356 posts

184 months

Sunday 3rd May 2009
quotequote all

NDA

21,775 posts

227 months

Sunday 3rd May 2009
quotequote all
maser_spyder said:
Good detective work. I spent a good 10 mins hunting.

Smiler.

11,752 posts

232 months

Sunday 3rd May 2009
quotequote all
jamoor said:
My microwave stopped working randomly....
Just be careful - might not be so random.

jamoor

Original Poster:

14,506 posts

217 months

Sunday 3rd May 2009
quotequote all
Smiler. said:
jamoor said:
My microwave stopped working randomly....
Just be careful - might not be so random.
Maybe, I guess changing the fuse will be a start, if it blows again, then buy a new one.

Simpo Two

85,883 posts

267 months

Sunday 3rd May 2009
quotequote all
Have you tested the fuse for continuity? It may be OK.

'Not working randomly' sounds like a dry joint to me.

jamoor

Original Poster:

14,506 posts

217 months

Sunday 3rd May 2009
quotequote all
Simpo Two said:
Have you tested the fuse for continuity? It may be OK.

'Not working randomly' sounds like a dry joint to me.
Well the door was closed and it just switched off.

Simpo Two

85,883 posts

267 months

Sunday 3rd May 2009
quotequote all
jamoor said:
Well the door was closed and it just switched off.
A friend of mine had a microwave like that. When it switched off he just whacked it and it came on again. It went on for years biggrin

(see 'dry joint' above)

Still, microwaves are so cheap you may as well get a new one to save you having to whack it. £30 buys a cavity magnetron that in 1944 you'd have been killed for.

spikeyhead

17,483 posts

199 months

Sunday 3rd May 2009
quotequote all
Simpo Two said:
jamoor said:
Well the door was closed and it just switched off.
A friend of mine had a microwave like that. When it switched off he just whacked it and it came on again. It went on for years biggrin

(see 'dry joint' above)

Still, microwaves are so cheap you may as well get a new one to save you having to whack it. £30 buys a cavity magnetron that in 1944 you'd have been killed for.
Nothign wrong with using percussive engineering to fix things.

jamoor

Original Poster:

14,506 posts

217 months

Sunday 3rd May 2009
quotequote all
Simpo Two said:
jamoor said:
Well the door was closed and it just switched off.
A friend of mine had a microwave like that. When it switched off he just whacked it and it came on again. It went on for years biggrin

(see 'dry joint' above)

Still, microwaves are so cheap you may as well get a new one to save you having to whack it. £30 buys a cavity magnetron that in 1944 you'd have been killed for.
what is a dry joint?

I don't really want to spend £30 when I can spend £1.50

maser_spyder

6,356 posts

184 months

Sunday 3rd May 2009
quotequote all
jamoor said:
Simpo Two said:
jamoor said:
Well the door was closed and it just switched off.
A friend of mine had a microwave like that. When it switched off he just whacked it and it came on again. It went on for years biggrin

(see 'dry joint' above)

Still, microwaves are so cheap you may as well get a new one to save you having to whack it. £30 buys a cavity magnetron that in 1944 you'd have been killed for.
what is a dry joint?

I don't really want to spend £30 when I can spend £1.50
Dry joint - when solder has dried without properly fixing the two metal components together (normally if one component is moved just before the solder sets, or one/both components haven't heated properly before letting the solder dry.

It's not such a problem with factory made stuff as it's all normally done through an automatic machine rather than by hand.

If it turned off with door closed, could it be a door switch problem? It's about the only moving part on the whole thing!

Does the machine come on at all or just not 'cook'?

jamoor

Original Poster:

14,506 posts

217 months

Sunday 3rd May 2009
quotequote all
maser_spyder said:
jamoor said:
Simpo Two said:
jamoor said:
Well the door was closed and it just switched off.
A friend of mine had a microwave like that. When it switched off he just whacked it and it came on again. It went on for years biggrin

(see 'dry joint' above)

Still, microwaves are so cheap you may as well get a new one to save you having to whack it. £30 buys a cavity magnetron that in 1944 you'd have been killed for.
what is a dry joint?

I don't really want to spend £30 when I can spend £1.50
Dry joint - when solder has dried without properly fixing the two metal components together (normally if one component is moved just before the solder sets, or one/both components haven't heated properly before letting the solder dry.

It's not such a problem with factory made stuff as it's all normally done through an automatic machine rather than by hand.

If it turned off with door closed, could it be a door switch problem? It's about the only moving part on the whole thing!

Does the machine come on at all or just not 'cook'?
No lights, nothing.

If the door switch was to blame then there should be some action on the LCD at least.

I meant it turned off as the door was closed biggrin

mgtony

4,027 posts

192 months

Sunday 3rd May 2009
quotequote all
jamoor said:
Simpo Two said:
jamoor said:
Well the door was closed and it just switched off.
A friend of mine had a microwave like that. When it switched off he just whacked it and it came on again. It went on for years biggrin

(see 'dry joint' above)

Still, microwaves are so cheap you may as well get a new one to save you having to whack it. £30 buys a cavity magnetron that in 1944 you'd have been killed for.
what is a dry joint?

I don't really want to spend £30 when I can spend £1.50
A dry joint is what you get when you try to microwave the sunday roast.smile

maser_spyder

6,356 posts

184 months

Monday 4th May 2009
quotequote all
jamoor said:
maser_spyder said:
jamoor said:
Simpo Two said:
jamoor said:
Well the door was closed and it just switched off.
A friend of mine had a microwave like that. When it switched off he just whacked it and it came on again. It went on for years biggrin

(see 'dry joint' above)

Still, microwaves are so cheap you may as well get a new one to save you having to whack it. £30 buys a cavity magnetron that in 1944 you'd have been killed for.
what is a dry joint?

I don't really want to spend £30 when I can spend £1.50
Dry joint - when solder has dried without properly fixing the two metal components together (normally if one component is moved just before the solder sets, or one/both components haven't heated properly before letting the solder dry.

It's not such a problem with factory made stuff as it's all normally done through an automatic machine rather than by hand.

If it turned off with door closed, could it be a door switch problem? It's about the only moving part on the whole thing!

Does the machine come on at all or just not 'cook'?
No lights, nothing.

If the door switch was to blame then there should be some action on the LCD at least.

I meant it turned off as the door was closed biggrin
Ah, NLNL (No lights, no life).

Yup, fuse somewhere most likely, or control box gone ping.

Try a google search for the model number, there's 'fix it' forums out there and there's a chance somebody has been there before you....

mickk

29,056 posts

244 months

Monday 4th May 2009
quotequote all
I admire your patience, i would have bought another Microwave by now. smile

Deva Link

26,934 posts

247 months

Monday 4th May 2009
quotequote all
jamoor said:
Well the door was closed and it just switched off.
What make is it? Our Panasonic just did exactly the same thing, and it's not the fuse either. Internet search reveals quite early failure is not unusual.

Really annoyed as it's a £200 stainless steel jobby and we've only had it 16mths - called Panasonic and they said hard luck. Also found their service centres are pretty thin on the ground.

It's doubly annoying as we initally bought one from Costco where it would have effectively been guaranteed for ever but that was silver coloured plastic and we took it back because the door started to melt. yikes

NDA

21,775 posts

227 months

Tuesday 5th May 2009
quotequote all
mgtony said:
A dry joint is what you get when you try to microwave the sunday roast.smile
smile