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Capacitor dried glue/corrosion or fire?

digiface

digiface

New Member
First of all, noob alert. This is actually a Roland DEP-5 rather than hifi audio but I'm trying to ascertain what the damage actually is and whether this can be / is worth fixing. I've read other posts and looked at pictures and still not sure whether this is glue corrosion or electrolyte leakage, some kind of corrosion caused by mixture of both or even a fire. There is glue on the bigger capacitors at the top left , but a lot of the damage I've tried to highlight is around the smaller capacitors which probably didn't need glue .. and other similar capacitors have no glue. The unit actually still works but occaisonally there's some crackling in the output .. I thought it was the relays as this is a known fault and I didn't bother looking inside before thy arrived .. doh.

The battery also need replacing as that's corroded and is possibly impiclated .. guessing that's what the corrosion is from on the frame where maybe the unit has been stored leant against a wall .. dont know.

EDIT: I'm beginning to think IS actually really dried out old glue , that for some reason has been applied to small clusters of caps but not all, that has badly corroded and started to eat away at the traces and surroundinng components.. I've counted 28 that probably need or should be replaced. Hmm.
 

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I some cases, the glue can be damaging, and sometimes it can be conductive.
It can also be a royal pain to clean.
Ya, if you're thinking it's eating traces (it could happen, I've seen corroded leads), they you should work on that.
Good luck!
 
@Dingman thanks for your reply .. I think I'll switch it on see what the relays do first so I know what's causing what before I possibly stop it working all together and never get it working again lol
 
Up to you. I'd solve the current issue, and if the glue isn't the problem, you still might want to remove it at the same time as a recap.
 
It looks like old glue. Be sure to remove it when replacing the caps in case there's 'lytic juice in it from a cap that may have leaked.
 
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