How to open up the Power Supply

by BTH
(New Jersey (USA))

My power supply is dead and in my research I see that a lot of times the bridge rectifier has gone bad. What I cannot find is how do you take apart the power supply to access the board to test the components? Unit is out of warranty and I'd hate to bring it someplace and pay $200.00 for service when I can pick up the part for $12.00 and repair it myself. The only logical way I see is to somehow remove the caulking around the back of the unit that will hopefully lead to screws to remove the back. Am I on the right track?

ADMIN REPLY: What model robot?

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Aug 25, 2018
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pics of PS 9995678
by: rick

sorry - thought i could post pictures, but don't see how

Aug 25, 2018
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Dolphin Premier - Failed Power Supply
by: rick

my Dolphin PS is part 9995678. as someone already posted, the circuitry in this unit is manufactured by HGPower. i'm including pics for locations of screws, and manufacture's info. i'm going to seek replacement part - rather than spend $200 for entire PS. i may find the cost of replacing the circuitry is more than the entire PS.. but at least i know what to look for. if anyone has been able to purchase this for a reasonable cost.. please post where you got one. thanks.

fyi - i used a 1/4" wood working tool - that has a sharp flat edge - to get under the hard plastic caulk. work slow and carefully.

Aug 25, 2018
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power supply quit
by: Anonymous

need some advise on a dead power supply model 9995672 it was working and now won't turn on

Jul 30, 2018
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Got mine open
by: Anonymous

My power supply also failed, so I decided to open the case up. There are four screws on the back under the bead of caulk. They are located next to small gaps in the plastic body; you can use a utility knife to cut away just enough to get the four screws out.
Once the screws are out, the back plate can be pried out and you can access the power supply inside of the case. It's an hgp-d180a which is made by HGPower (hgpower.com). While I have yet to find any useful information about how to diagnose or service this part (not an electronics expert, but I can solder), there are places that state they can repair. I found https://www.iernc.com/ and they quoted between $175 and $250 to have it repaired (board only, not entire unit). My concern would be if the small board that contains the power switch and timer functions is causing the issue, then the money spent would have been wasted. I might just buy a replacement from Amazon as the (variable) cost of repair could exceed the price of a new unit.
If my pool weren't turning into a toad pond, I might spend more time tinkering with the thing, but it's getting kinda gross in there.

Jun 18, 2018
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Open Powersupply
by: Anonymous

Did anyone ever figure out how to open the 9995672. Powersupply for the Dolphin with three selections. Mine worked once, then died. Maytronics sent me a new one under warranty. But, I'd like to open up the old one and tinker with it.

Apr 30, 2018
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Working Again
by: BTH

Not sure what the problem was, but after a thorough cleaning with a product called Contact Renew + Lube the power supply worked fine after reassembly. Although there was nothing visible I would guess possible corrosion build up on the contacts someplace?

Apr 29, 2018
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Any luck?
by: Anonymous

Did you ever figure out the problem with the power supply? Mine just died too.

Jul 25, 2014
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No Schematic
by: ADMIN

Hi, no schematic is available. These are not generally user serviceable.

Jul 24, 2014
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Got it open
by: BTH

Well I finally got it open. Had to cut through all the caulk with a Dremel which did expose 4 screws. Now that I'm inside there is more in there than I expected. Is there a schematic available anywhere?

Jul 20, 2014
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I offered what I knew. My forte is Aquabot. Call Aquaquality pools and Spas, they are an authorized Dolphin Repair shop
by: ADMIN

My forte is Aquabot. Call Aquaquality pools and Spas, they are an authorized Dolphin Repair shop

Jul 18, 2014
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Does Anyone Read or Post Here??
by: BTH

Posted this message looking for some assistance... I answered the Admin almost immediately and still nothing.

Jul 15, 2014
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Open Case
by: ADMIN

I have not opened this model case however, other Dolphin power supplies open from the bottom. You may be correct about the caulk but check the bottom. There may be a plastic cover over the screws.
Sorry I can't help any more than that.

Jul 15, 2014
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Dolphin Nautilus
by: BTH

Sorry, it's a Dolphin Nautilus. The Power Supply is Model 9995670. It is the one with the the selectable 3 day programming on it.

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