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Title: EIII Power Supply - New Plug n Play Replacement Post by: whatsupdoc on May 16, 2024, 09:20:38 PM Hi All,
I finally finished the drop in replacement power supply for the EIII. You can find it on eBay: https://www.ebay.com/itm/266812981909 The footprint, mounting holes, and connectors are identical to the original which allows for easy, trouble-free replacement. The input and output connectors are labelled with their respective names and/or voltages, which allows for quick identification and troubleshooting in the future. The only 'modification' required is to cut and remove the voltage selector switch wires, or coil them up and zip-tie them out of the way. I have provided additional solder through holes for the 5V supply and the Stereo Relay Modification. You will find some EIIIs with the 5V wires soldered directly to the Molex pins. This is acceptable and will provide a reasonably robust connection, but I decided that proper through holes would be most beneficial for anyone looking to reduce the resistive losses associated with using the original cable and Molex connector. The Stereo Relay Modification is present for those who wish to easily bypass the output relays. There is a ribbon cable that is known to fail, which mutes the output relays. You can repair the ribbon cable, but some folks prefer to enable the relays always on. Power Supply Specifications: Input: 100-240VAC Output: +5V @ 15A (20A max peak) +12V @ 5A +15V @ 1.4A -15V @ 1.4A Let me know if you all have any questions. -Chris Title: Re: EIII Power Supply - New Plug n Play Replacement Post by: dvdborn on May 20, 2024, 02:41:55 AM Thanks Chris!
Good to have an easy solution. Now, if only it shipped from within the EU :-). Title: Re: EIII Power Supply - New Plug n Play Replacement Post by: whatsupdoc on May 20, 2024, 10:41:20 PM Hi dvdborn,
Sorry, bud. You've got that pesky VAT. If you ever find yourself if need, feel free to ping me directly. I'd be happy to send you a 'gift'. Title: Re: EIII Power Supply - New Plug n Play Replacement Post by: dvdborn on May 22, 2024, 12:45:30 PM Much appreciated!
Title: Re: EIII Power Supply - New Plug n Play Replacement Post by: janob on May 31, 2024, 01:04:12 AM Good morning, It's a big day
It is fabulous! Mine was constantly in divergence from the requested voltage. Even after changing the caps. She loses 5V. Are you the one who makes them? I ordered one from you on Ebay. And I have some questions to ask you about the relay and the stereo output. A modification made by Doctor C brought the 5V to the relay. will this have to be taken into account with the new power supply? Good to you. A big thank-you Title: Re: EIII Power Supply - New Plug n Play Replacement Post by: whatsupdoc on May 31, 2024, 09:08:01 PM Hi Janob!
Yes, I am the one who designed and builds these replacements. Thank you for your order! Regarding the stereo relay mod by Doctor C - It would depend on how it was implemented. If they ran power directly from the power supply, then yes, those wires would have to be removed/desoldered. But you would only need to resolder them to the new power supply. If they mod was done by jumpering a +5V line from another location and not from the power supply, you could just swap the PSUs without issue or concern. BUT... I cannot make any guarantees since I'd have to see what's been done to your particular unit. Feel free to post some pictures or details and we can work sort it out (or ping me directly). -Chris |