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Topic:
Fix for MX-880 & MX-980 (Possibly Others) That do not charge anymore
This thread has 6 replies. Displaying all posts.
Post 1 made on Wednesday February 3, 2021 at 10:28
shokwaverider
Junior Member
Joined:
Posts:
January 2021
43
I have had a few customers complain lately that when they plug in their 880 or put their 980 on the charging cradle that the batteries do not charge. But if the batteries are charged with an external 3rd party charger the batteries are actually good and work well when put back in the remote.

I have engineered a fix for this. The Charging chip in these remotes goes bad. There is a very inexpensive 3.7v Li-ion charging PCB, that can relatively simply be fitted into the remote and wired to bypass the charging chip (3 small wires).

An added benefit is that the new charger almost halves the charging time and if located correctly shows the user when the battery is charging AND when it is fully charged (Not normally available with the 810 and 880 that do not come with cradles) I have added a window on the back of some of our test remotes so the charging status is clearly visible. Otherwise one has to remove the battery cover while charging to see the internal LED status.

This fix does not bypass the charging indicator on the display, so the remote looks and fees as if nothing has changed.

Has anyone else done this? I have not written a document about it but anyone with good soldering skills can effect the change. It is easy to explain if anyone is interested.
Post 2 made on Wednesday February 3, 2021 at 15:12
tomciara
Loyal Member
Joined:
Posts:
May 2002
7,765
Interesting, probably a fun project for a do it yourselfer, maybe not so much for a client. Is it a circuit board you put inside?
There is no truth anymore. Only assertions. The internet world has no interest in truth, only vindication for preconceived assumptions.
OP | Post 3 made on Wednesday February 3, 2021 at 19:24
shokwaverider
Junior Member
Joined:
Posts:
January 2021
43
Yes a small 3.7v Charger. We do it as an "Upgrade" for our customers.

Like This:

[Link: ebay.com]
Post 4 made on Monday April 19, 2021 at 12:26
smetaxas
Lurking Member
Joined:
Posts:
August 2013
3
On February 3, 2021 at 10:28, shokwaverider said...

This fix does not bypass the charging indicator on the display, so the remote looks and fees as if nothing has changed.

Has anyone else done this? I have not written a document about it but anyone with good soldering skills can effect the change. It is easy to explain if anyone is interested.
Post 5 made on Monday April 19, 2021 at 12:30
smetaxas
Lurking Member
Joined:
Posts:
August 2013
3
I am having this exact problem with my MX980. I'd like to find out how to fix my charger. smetaxas@comcast.net
OP | Post 6 made on Thursday April 22, 2021 at 10:36
shokwaverider
Junior Member
Joined:
Posts:
January 2021
43
On April 19, 2021 at 12:30, smetaxas said...
I am having this exact problem with my MX980. I'd like to find out how to fix my charger. smetaxas@comcast.net

Are you sure that the charge plug is not bad? If it is you can simply install a 3.7v charging pcb. We have done many of them on 980 and 880 remotes.
Post 7 made on Friday April 23, 2021 at 15:21
punter16
Active Member
Joined:
Posts:
May 2011
543
On February 3, 2021 at 10:28, shokwaverider said...
I have had a few customers complain lately that when they plug in their 880 or put their 980 on the charging cradle that the batteries do not charge. But if the batteries are charged with an external 3rd party charger the batteries are actually good and work well when put back in the remote.

I have engineered a fix for this. The Charging chip in these remotes goes bad. There is a very inexpensive 3.7v Li-ion charging PCB, that can relatively simply be fitted into the remote and wired to bypass the charging chip (3 small wires).

An added benefit is that the new charger almost halves the charging time and if located correctly shows the user when the battery is charging AND when it is fully charged (Not normally available with the 810 and 880 that do not come with cradles) I have added a window on the back of some of our test remotes so the charging status is clearly visible. Otherwise one has to remove the battery cover while charging to see the internal LED status.

This fix does not bypass the charging indicator on the display, so the remote looks and fees as if nothing has changed.

Has anyone else done this? I have not written a document about it but anyone with good soldering skills can effect the change. It is easy to explain if anyone is interested.

Interesting. We have been seeing issues for about 2 years with MX990s where they won't charge. Has URC acknowledged this at any point?


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