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+  MCI Console and Tape Machine Forum
|-+  MCI Consoles
| |-+  JH-600 Series Consoles (Moderator: Westrek)
| | |-+  Fishy burning smell, any ideas?
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Author Topic: Fishy burning smell, any ideas?  (Read 102 times)
greendredmusic
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« on: October 10, 2017, 01:27:17 PM »

Hey guys I have been experiencing a fishy burning smell around the console and power supply  but can't identify where it's coming from has anyone had this before? It's definitely causing me a lot of worries, any help would be HUGELY appreciated. Thank you.
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Berwyn636
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« Reply #1 on: October 11, 2017, 12:15:55 PM »

Leaking/burnt cap probably. Check your rail voltages. +/- 18v but really it could be any part in there. The fishy smell makes me think its the cap oil burning.

My 2 dollars.
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MCI brown is the new black.
Rob
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« Reply #2 on: October 11, 2017, 07:54:55 PM »

Leaking/burnt cap probably. Check your rail voltages. +/- 18v but really it could be any part in there. The fishy smell makes me think its the cap oil burning.

My 2 dollars.

The most likely problem.
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greendredmusic
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« Reply #3 on: October 12, 2017, 03:02:28 AM »

Thanks guys, I think it may be in the power supply, going to have a look with a tech today. Thanks so much for the response.
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greendredmusic
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« Reply #4 on: October 13, 2017, 03:08:35 AM »

So we've found 2 leaky burned out looking caps in the power supply but we can't get hold of these in the uk, can anyone help? We're starting to stress out a bit because we have big sessions booked in from Wednesday next week!! We need 2 of these babies:

MEPCO/ELECTRA
3186BE872U040ALA1
8700UF -10+75%
40VDC 50 surge
85CMAX AMBIENT
362851456699

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Rob
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« Reply #5 on: October 13, 2017, 06:48:41 PM »

These would work
http://uk.rs-online.com/web/p/aluminium-capacitors/8556065/

Are the originals screw terminal types like these ones ?   400 & 500 series desks are, but I've not been in a 600 series PSU.
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Berwyn636
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« Reply #6 on: October 14, 2017, 09:58:36 PM »

EPCOS 10000UF 40V 20% SCREW terminal is what i replaced ALL the 8700uf caps with. there are 8 in the PSU and 4 in the desk. I'd replace them all as you have a couple leaky ones you might well have completely dead ones too, i did. Clean up that audio rail voltage!

They were shorter than the originals but the same diameter so they fit fine.

More airflow!! Wink
« Last Edit: October 14, 2017, 10:03:01 PM by Berwyn636 » Logged

MCI brown is the new black.
greendredmusic
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« Reply #7 on: October 15, 2017, 03:32:03 AM »

Thanks guys found some alternatives and fitted them yesterday, they weren't cheap but we're back up and running!
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