G25 H Shifter Jumping Out Of 1St Gear
Posted May 18 2019 - 08:50 AM
My g25 H shifter is jumping out of 1st gear into 3rd. Does it on a couple of mods. Just started doing this. was fine during an earlier session.
Any ideas? Was 'stuttering' a bit while in 2nd gear the last few days ... and now this ...
Posted May 18 2019 - 12:21 PM
One of the pots is loose
A wire is loose or about to break
One of the pots needs to be cleaned (least likely)
Be careful if you open the case as there are several very thin wires, and putting it all back together, you have to make sure the wires are routed around the posts so that they aren't stressed.
Edited by Bob Simpson, May 18 2019 - 12:26 PM.
Posted May 18 2019 - 12:28 PM
Posted May 18 2019 - 12:32 PM
Very few videos on YouTube that go that deep in dissassembly ...
I have no other choice ... I have to total dissassemble ...
Posted May 18 2019 - 03:23 PM
Posted May 19 2019 - 02:14 AM
I'm not too much of an expert but I'd disassemble it, clean the potentiometers a little, make sure when re-attaching that they're in the correct spot, and the reassemble. Worked for me a couple of times already on my G27.
Posted May 19 2019 - 04:33 AM
So far, there are 14 pieces and 20 odd screws disassembled .... to get to the shifter body ...
Its all dust-free in the shifter housing. Only 'dirt' is the graphite lube ... Does that lube tend to foul up pots?
Thanks for the guide link. Also a decent video here.
Diving back in ...
Posted May 19 2019 - 06:35 AM
Yikes! That is tiny. How to disconnect the connector from the pot?
Is it possible to strip such tiny wire and re insert into connector?
Posted May 19 2019 - 10:41 AM
In my case, the wire broke off right at the end of the pin, and there was a rubbery sealant around the end of the pins - so I couldn't get to the pin to re-solder. It's not clear from your photo whether you have the same issue.
To fix it, I managed to find a replacement pin for the pot socket among some old PC spares (a processor fan power connector pin type XH - I think. Search eBay for 'XH connector'.). However it's a tricky job cutting away the rubbery compound (using a sharp scalpel) to extract the old pin from the socket (a small tang holds it in). Once that's done it's straightforward re-soldering the wires to the new pin. I used some silicone sealant to reinstate the stress relief afforded by the original rubbery compound. Not pretty, but it has worked well!
Posted May 19 2019 - 11:57 AM
Edit:- Cannylad got in as I was typing this. He has given you all the you need
Edited by Paddy the Irishman, May 19 2019 - 12:00 PM.
Posted May 19 2019 - 05:20 PM
I will study the old pin removal issue a bit more today and rummage through my tools to see if I have anything that can work on such a small scale.
Thank you Paddy and Cannylad for the info.
Posted May 20 2019 - 06:20 AM
connector removed ok.
old terminals pulled out ok. (Found a perfect old terminal removal video) https://www.youtube....h?v=S9xeg_3eREc
I did break off another wire. But I did note the positions earlier.
Now to re-solder wires to terminals and re-assemble connector.
A friend will drop by tomorrow with good modern small job soldering gear.
Will Tex Harwood make the ADC VOR 67 SC mod starting grid on Wed night at Opatija?
Edited by Paul Harwood, May 20 2019 - 06:30 AM.
Posted May 20 2019 - 09:13 AM
Posted May 21 2019 - 09:57 PM
Repair status: Too small-scale a wiring job for my friend. I will reach out to pro electro repair guys in the area and start also looking into getting the tools and parts required to do the repair myself, as this may be less expensive. Finding these is easy once I know what the name of the components are to Google for the right thing. (ex. Dunlop connectors)
Thanks for the offer Daniel! In fact, I could cannibalize my old MOMO pedals for their pot connector but that seems wasteful, but yes, donor shifter or pedals would be one way to fix my shifter,
I will probably make the racing this week but not with an H pattern shifter, which in the case of the Opatija hairpin breaking zones, is a crying shame!
Logitech have replied to my help request with the referral to their tech support but also with a referral to some kind of sponsorship application. I will check that out as well.
In large part, this is a 'planned obsolescence' issue and parts and wiring that are of the most delicate type, probably mass produced and assembled but also these days it is an ecological and green-thinking issue. Many solutions would make landfill of such computer peripherals at the 1st breakdown but that seems immoral at worst. So, getting max longevity out of such equipment is not a bad thing.
On the other hand, the mechanical side of the Logitech G25 shifter design and its other electronic components is pretty cool and designed for pretty tough use at an arguably affordable price.
Edited by Paul Harwood, May 21 2019 - 10:02 PM.
Posted Sep 09 2019 - 03:33 AM
Posted Feb 17 2020 - 06:38 AM
My last repair I got a real solid solder joint, but unfortunately I went with too much of a right-angle off the post and the whole post finally broke away from the pot! The other two solder joints were at around 45 degrees and they are still holding fine and not transferring stress to their solder joints when the shifter travels back and forth. So I would recommend this for anyone trying this type of repair.
So I have been racing using the sequential shifter and have ordered a Thrustmaster H pattern / sequential shifter unit. I will try and run the G25 wheel and pedals and the Thrustmaster unit.
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