Bad Capacitor then??!

[Speakersrock]

Hi there,

I just want to clarify before I take any action to fix it;

I have an newish (but not under guarantee) DVD player here.
It has packed up, and does not even power on. (Yes, have checked the fuses

I noticed 'orange stuff' at the bottom of the capacitors and imminently thought of this great site.

Do you think this would probably be blown caps?

Here are some very badly taken images which might help!


Any advise would be much appreciated!, Thanks.


http://heavens-end.co.uk/share/PHOT0011.JPG
http://heavens-end.co.uk/share/PHOT0009.JPG
http://heavens-end.co.uk/share/PHOT0010.JPG

[willawake]

Re: Bad Capacitor then??!

looks like glue

[Speakersrock]

Re: Bad Capacitor then??!

oh right!

But if it were glue would it not be on all the other capacitors too??

Thanks for the responce.

[willawake]

Re: Bad Capacitor then??!

your logic is flawed

[zandrax]

Re: Bad Capacitor then??!

But if it were glue would it not be on all the other capacitors too??

Not always: most of times only big capacitors need to be secured to the board with glue.
Anyway I agree with willa: it seems glue because electrolite smells bad (do you smell it?) and it would have been leaked into a pool.

Zandrax

[Speakersrock]

Re: Bad Capacitor then??!

oh right. Okay. I guess you are right there then

If it was leaked stuff, it would be hard by now??

Thanks for your continued help.

[Speakersrock]

Re: Bad Capacitor then??!

Im only assking if it would be hard or not, in the terms of, if I touched it, and this stuffcrumbled or something, I would know its not glue.

...That logic is incorrect too?

[willawake]

Re: Bad Capacitor then??!

caps are secured at the bottom by a bung. this is pretty much guaranteed to be airtight otherwise i believe you would be looking at very early drying out of the cap.

with some cheap manufacturers the bung is not made of quality synthetic rubber so it gets hard with age and temperature and then when the capacitor is failing and producing gas, the first thing to go is the bung not the vents at the top.

so this makes leaking at the bottom of the cap but it also makes the cap pushed up or leaning over

if you scroll down
http://www.capacitorlab.com/visible-failures/index.htm

so on the basis that
- the caps are not leaning or pushed up
- the material in dispute is in a horizontal line across the negative stripe which seems odd if something was leaking
- it looks like one type of glue i am familar with seeing, others are more obvious like white stuff or clear hot glue

i think it is glue

now that does not mean the caps are not off spec. this could be proven by using esr meter or maybe capacitance meter, or otherwise by replacing them and seeing what happens

still, other components could have failed in this power supply. so you will need to start testing.

[Speakersrock]

Re: Bad Capacitor then??!

okay, thanks very much for all that info, was very, very useful!

I guess I had better start testing then yes. - Or as you say replace the capacitors and see.
Many thanks for all the help everyone.
Take care - and well done on such a great site and forum!