Anyone Put A 10-Turn On A Megawatt.

BORROWED COMPUTER down at the store during the day then one-fingered tapping on the Galaxy after 5PM. I'm worse at voice recognition now. Microwave banda is jammed at night so I do the best I can.

I did. But I didn't feel like disassembling the whole durn thing, so I paralleled the 10 turn with the original pot - just soldered my extensions to the appropriate pot legs on top of the board. It increased the voltage available by ~.5v - about right for what I wanted.

CC

I mentioned it here:

http://www.rv.net/forum/index.cfm/fuseaction/thread/tid/28279273/gotomsg/28281131.cfm#28281131

"On my recently acquired MegaWatt 400, I didn't feel like pulling the whole thing apart to replace the pot. So I just paralleled the new 10 turn with the original and set the original to as low (resistance) as it would go (Highest voltage). To do this I just soldered zip wire to the exposed legs of the pot on top of the board, and ran it to the new pot, stuck to the top of the PS with mounting tape.

On these supplies, lower resistance corresponds to higher voltage - noted by Landyacht & confirmed on mine. Parallelling the pots allowed me to shift the resistance down just a smidge, since the original pot had a range of ~1-980 ohm or so. Now I have <1 to ?something just under 980?. The voltage available was ~9.5 -15.5V, now it's about 10-15.8 . Numbers are approximate, I did this a month or so ago. "

You're getting pretty good at dictating to that little smart phone to post, aren't ya, MXwanderer?

The single pot original pot has to be removed, the entire Megawatt disassembled, in order to access the circuit board under the single turn pot. Then extension wires (25 ga (?) ) need to be soldered in to run to the new 10-turn pot.

Can I do this with 1-1/4 working hands? It would help immensely to read someone else's account, hopefully detailed that would allow me to conjure up a vision whether or not I would have the ability do this myself or go on a 440 mile overnighter journey and let a communications radio tech do the work.

The Megawatt is a power supply. It built differently than a CheapO and it is built differently than a Meanwell.

Most people have full use of both hands. I do not

Let me Google that for you.

clicky link

They make them in Mexico; you should be able to buy at the Tienda.

They have moving frictiony parts and wear out. Ive taken them apart before in my prior life as a tech in a switching power supply lab.