Circuit board query

[RedQueenie]

Our bathroom extractor fan which has been a bit temperamental for the last few years has seemingly given up the ghost.
It is a Vent-Axia ACM150T 17106020.
We have taken it down from the loft and I have given it a bit of a wipe with a damp cloth to get rid of the dust and dirt build up. That's when I noticed that on the circuit there seems to be a bit of a scorch mark. Could this be the issue and if so can it be replaced and fixed? Apologies for the quality of the photos.

 

[Harry Bloomfield]

That's when I noticed that on the circuit there seems to be a bit of a scorch mark. Could this be the issue and if so can it be replaced and fixed? Apologies for the quality of the photos.

That mark seems unlikely to be the issue, unless the circuit track behind it is damaged/burnt out. The burn, seems more likely due to heat, conducted from the large resistor above it. Disconnect, and remove the pcb completely, then exam it more closely.

 

[RedQueenie]

Hiya, thank you. I have taken it off and taken another photo of the back. There does seem to be something wrong with the black cylinder. Could this be it.

 

[Alec_t]

The black cylinder is an electrolytic capacitor, which looks to have overheated (due to a high ESR?), judging by the underside of the board. What are its markings? It's certainly worth replacing; but the fault may lie elsewhere.

 

[RedQueenie]

It does look like it has melted the underside.
I think this may be beyond me and I'll have to get a new fan. When taking it out found that there was no condensate trap fitted, which I guess wouldn't have helped

 

[Murdochcat]

Lots of fans don’t last long these days

 

[RedQueenie]

I just hate the waste. Everything else seems perfectly good. Just more plastic in landfills.

 

[endecotp]

You may be able to get a replacement for the circuit board:

Manrose 479392 Timer Board for MF100T Extractor Fan | eBay UK

Find many great new & used options and get the best deals for Manrose 479392 Timer Board for MF100T Extractor Fan at the best online prices at eBay UK! Free delivery for many products!

www.ebay.co.uk

 

[JohnW2]

You may be able to get a replacement for the circuit board:

Yes, one usually can - but they tend to be almost expensive as a whole new fan In fact, I've seen some advertised which are more expensive than a brand new fan!

 

[Harry Bloomfield]

Yes, one usually can - but they tend to be almost expensive as a whole new fan In fact, I've seen some advertised which are more expensive than a brand new fan!

Not too bad, at £17.45, but the cause/the lack of a condensate trap - needs to be resolved first.

 

[chivers67]

Not too bad, at £17.45, but the cause/the lack of a condensate trap - needs to be resolved first.

How did you work that out? A damp cloth was used to clean the fan.

 

[Harry Bloomfield]

How did you work that out? A damp cloth was used to clean the fan.

Did you miss....

When taking it out found that there was no condensate trap fitted, which I guess wouldn't have helped

 

[JohnW2]

Not too bad, at £17.45, ....

Not at all bad in relation to the cost of the OP's expensive fan.

However, the timer modules for 'basic' Manrose fans cost about the same as that, but you can pick up a brand new XF100T for little over £20.

 

[Harry Bloomfield]

Not at all bad in relation to the cost of the OP's expensive fan.

However, the timer modules for 'basic' Manrose fans cost about the same as that, but you can pick up a brand new XF100T for little over £20.

Vent-Axia ACM150T is an inline fan, and a 6", rather 4".

 

[JohnW2]

Vent-Axia ACM150T is an inline fan, and a 6", rather 4".

I know - that's why it costs nearly 10 times more than the XF100T. However, as I said, the timer module for an XF100T costs £15-£20, and a new entire fan (including a new timer module) costs £20 or so.

Fortunately, however, the timer modules are usually repairable. It's nearly always the electrolytic capacitor that dies (and usually without taking anything else out), and that can be replaced for 'pence'