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Circuit board that fits

jimdmorrison
Explorer
Explorer

https://letusdisagree.com/wp-content/uploads/2021/04/circuit.jpeg

Has the #'s 1 21130

I need to replace my circuit board, but the replacement one I got was too big and didn't have screw holes in the right place. Any recommendations on which one I should be looking for? I need the screw holes to mount it or it will touch the metal.
15 REPLIES 15

jimdmorrison
Explorer
Explorer
Got what I need from Best Converter. Thanks everybody!

Gdetrailer
Explorer III
Explorer III
BFL13 wrote:
jimdmorrison wrote:

https://letusdisagree.com/wp-content/uploads/2021/04/circuit.jpeg

Has the #'s 1 21130

I need to replace my circuit board, but the replacement one I got was too big and didn't have screw holes in the right place. Any recommendations on which one I should be looking for? I need the screw holes to mount it or it will touch the metal.


The photo in the OP is of a 6300's fuse panel as seen here:

https://www.bestconverter.com/Magnetek-Upgrade_ep_26-1.html


But, obviously THAT board is obsolete and no longer "available", you have to use the aftermarket "replacement" 6300/7300 board which is not OEM and is pictured in this photo from Best Converter.



Obviously, the OP did not buy fuse board from Best converter and the board they got is DIFFERENT enough that the mounting holes are not in the same place.

What board they bought?, don't know since they didn't post pix of that board.

If OP would have bought the "kit" from Best converter, they would have gotten a new fuse board, but, looking over Bestconverter website, they do not show that board for sale as a separate item..

Here is link to fuse panels..

HERE which just shows a simple 10 position buss bar with no fuses.

OP should try contacting Best Converter to see if they can get the correct upgraded fuse panel that fits, otherwise they simply just need to do some surgery to their panel to make what they have work.

BFL13
Explorer II
Explorer II
jimdmorrison wrote:

https://letusdisagree.com/wp-content/uploads/2021/04/circuit.jpeg

Has the #'s 1 21130

I need to replace my circuit board, but the replacement one I got was too big and didn't have screw holes in the right place. Any recommendations on which one I should be looking for? I need the screw holes to mount it or it will touch the metal.


The photo in the OP is of a 6300's fuse panel as seen here:

https://www.bestconverter.com/Magnetek-Upgrade_ep_26-1.html
1. 1991 Oakland 28DB Class C
on Ford E350-460-7.5 Gas EFI
Photo in Profile
2. 1991 Bighorn 9.5ft Truck Camper on 2003 Chev 2500HD 6.0 Gas
See Profile for Electronic set-ups for 1. and 2.

Gdetrailer
Explorer III
Explorer III
BFL13 wrote:
Ok, so that one has single red pos and white instead of single blue pos and white that go to the DC panel. If it is a 6300 panel, jumper the two pos terminals and put the red wire on one of them.


Correct, but I am interpreting that the OPs current issue is they broke the original fuse circuit board when replacing the converter and the replacement fuse board they ended up is different in size and the mounting holes are in different places which do not line up with the original mounting points creating an electrical short between board and the converter box.

Not to mention sounds like they are now unable to close the converter panel door due to fuse board not fitting correctly in place without shorting.

They may or may not be able to find the original fuse circuit board and may have to adapt the replacement by removing the old mounting hardware (spacers) and moving that hardware to new locations that they will need to drill out.

Depending on design, the original mounting spacers may be "PEMs" which will be damaged during removal process (those are not reusable).



PEMs require installation tools to install them correctly.

If PEMS they will need new spacer hardware, the nylon spacers I posted up the thread can be used if the OP can find ones that are not too tall, they may need to search around for the correct length spacers.

BFL13
Explorer II
Explorer II
Ok, so that one has single red pos and white instead of single blue pos and white that go to the DC panel. If it is a 6300 panel, jumper the two pos terminals and put the red wire on one of them.
1. 1991 Oakland 28DB Class C
on Ford E350-460-7.5 Gas EFI
Photo in Profile
2. 1991 Bighorn 9.5ft Truck Camper on 2003 Chev 2500HD 6.0 Gas
See Profile for Electronic set-ups for 1. and 2.

Gdetrailer
Explorer III
Explorer III
BFL13 wrote:
Yes, but the issue is the 6300 'split'-- DC fuses of the 6300 between ones that need the battery as filter and the others that don't. You want to put the pos wires in the right places. if you use a 6300 panel with a deck mount converter that has its own RP fuses, you jumper the panel's two pos terminals now that all fuses are getting clean power.

Don't know for sure any of this applies to the OP's choices--why that panel doesn't fit. Maybe it is not even a 6300!


OP changed the converter section..

jimdmorrison wrote:
The new one I got is just a little too big. I'd rather buy something that fits better so I can close the lid.

This was the part I replaced originally, but accidentally broke the circuit board when I was working on it.
https://www.amazon.com/gp/product/B004A34G94/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1

CLICKY LINK FROM ABOVE



Pix of converter the OP installed..



A WFCO WF-8955 3 stage Switching converter which does not require a battery for filtering or regulating..

OP can use ANY fuse block that they can figure out how to fit into the convert box space allocated for the DC fuses..

BFL13
Explorer II
Explorer II
Yes, but the issue is the 6300 'split'-- DC fuses of the 6300 between ones that need the battery as filter and the others that don't. You want to put the pos wires in the right places. if you use a 6300 panel with a deck mount converter that has its own RP fuses, you jumper the panel's two pos terminals now that all fuses are getting clean power.

Don't know for sure any of this applies to the OP's choices--why that panel doesn't fit. Maybe it is not even a 6300!
1. 1991 Oakland 28DB Class C
on Ford E350-460-7.5 Gas EFI
Photo in Profile
2. 1991 Bighorn 9.5ft Truck Camper on 2003 Chev 2500HD 6.0 Gas
See Profile for Electronic set-ups for 1. and 2.

Gdetrailer
Explorer III
Explorer III
BFL13 wrote:
Looks like for a 6300. No RP fuses. the 7300 has the RP fuses on the Dc panel. Also the 6300 has the "split" for taking three wires (two positives-red and blue) while the 7300 uses just two (one blue pos)

I don't know how you would handle the split using a 7300's on a 6300. The blue pos goes on the top middle there, so the red goes in the pos set-screw lug. I guess the RP fuses would just be gravy.


RP (Reverse polarity) fuses (they are for protecting the converter from reverse polarity) can be done separate of the fuse panel or just use one or two of the positions on the fuse panel depending on converter amperage and mark it converter.

Panels with RP fuse positions connect one side of the fuse to the panel buss feeding all the other fuses any way.

Easy peazy.

BFL13
Explorer II
Explorer II
Looks like for a 6300. No RP fuses. the 7300 has the RP fuses on the Dc panel. Also the 6300 has the "split" for taking three wires (two positives-red and blue) while the 7300 uses just two (one blue pos)

I don't know how you would handle the split using a 7300's on a 6300. The blue pos goes on the top middle there, so the red goes in the pos set-screw lug. I guess the RP fuses would just be gravy.
1. 1991 Oakland 28DB Class C
on Ford E350-460-7.5 Gas EFI
Photo in Profile
2. 1991 Bighorn 9.5ft Truck Camper on 2003 Chev 2500HD 6.0 Gas
See Profile for Electronic set-ups for 1. and 2.

Gdetrailer
Explorer III
Explorer III
Is the picture you posted the new circuit board you bought to replace the broken board?

I found this one that looks similar other than it has two more circuits..



found HERE that one is for Magnetek/Paralax 6300/ 7300 series converter panel.

You might be find exact replacement if you search for the name and model of converter panel box you have.

However, your fuse block may have been discontinued and if that is the case you may need to use retrofit fuse panels which will not be a direct fit and will require some modifications to fit.

Barring the searching, you could try contacting BEST CONVERTER

Otherwise I do have several other suggestions, there are add on ATC fuse panels you can use if you have the space and depth..



These are nice since they can be surface mounted directly to metal with no electrical isolation needed..





In the case of converter use, you use one of the fuse positions for the converter fuse and the stud would be the battery connection.

That one is a Blue Seas so it is a bit expensive.. Found HERE

Another version..



If you need a negative termination you would need to do some digging but there may some of those types of fuse blocks that offer a negative termination also.

jimdmorrison
Explorer
Explorer
That's it! Thanks for your help! Any suggestions on which distribution panel to buy? I don't want to replace the whole converter.

dougrainer wrote:
That looks like an OLD Magnetec 12 volt converter 12 volt fuse panel. Now it is a Parallax Power Supply 7345 model. Yours must be more than 20 years old. You will have to adapt or drill the correct mount holes and use nylon washers to stand off from shorting the back metal mount. If mine, I would line it up on the existing metal mount back and mark the mount screw holes and then use 1/4 head inch self tapper screws. Doug

http://web.archive.org/web/20200228080803/http://parallaxpower.com/wp-content/uploads/sites/8194/201...

dougrainer
Nomad
Nomad
That looks like an OLD Magnetec 12 volt converter 12 volt fuse panel. Now it is a Parallax Power Supply 7345 model. Yours must be more than 20 years old. You will have to adapt or drill the correct mount holes and use nylon washers to stand off from shorting the back metal mount. If mine, I would line it up on the existing metal mount back and mark the mount screw holes and then use 1/4 head inch self tapper screws. Doug

http://web.archive.org/web/20200228080803/http://parallaxpower.com/wp-content/uploads/sites/8194/201...

jimdmorrison
Explorer
Explorer
The new one I got is just a little too big. I'd rather buy something that fits better so I can close the lid.

This was the part I replaced originally, but accidentally broke the circuit board when I was working on it.
https://www.amazon.com/gp/product/B004A34G94/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1

Old-Biscuit
Explorer III
Explorer III
What Power Panel is that DC Fuse panel out of??
Is it time for your medication or mine?


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