Any recommendations for classic car gauge repairs?

philw696

Member
Messages
25,114
Hi All.

As an update all the UK companies I have tried either won’t respond or can’t help due to parts being NLA for the Veglia Borletti odometer in the Testa…. After an initial positive enquiry with a couple of companies, no joy.

The Oldsmobile looks to be more promising with quite a few places confirming they can fix the odometer, so will be removing that soon and sending off for repair.

So I’ve decided to have a go myself (previously managed to repair a failed Tachometer on another classic Ferrari, replacing a failed IC) and fix the Veglia Borletti unit, information and parts seem very scarce on the internet unfortunately too….

I have taken lots of photos and documented steps so far via another Forum:


In summary it’s looking positive, bit more work to be done:-
  1. The plastic and metal gears are all in very good condition, greatest fear was that these were damaged and I would have to somehow reproduce them…. Old grease cleaned off and regreased now.
  2. The electric motor driven by pulses is working fine after I tested it, another major issue if it wasn’t working and no replacements available
  3. The distance rolling counters and mechanisms are also all in great condition
  4. Now the issue is pinpointed to the electronics side, that all mechanicals are fine. Much easier to sort....
Have spotted some dry solder joints and PCB tracks starting to fail, will look to repair and refurb those now. Also replace the Transistors and ICs, as most likely cause of failure being one of the ICs.

Some photos attached, but more on the other forum thread. Including parts list from a fellow friendly Australian.

Thought I would share on this forum too, as I’m sure in the future there will be some issues with gauges on these ageing Maseratis etc. Especially as both Maserati and Ferrari spare parts supply chains are poor in comparison to other marques.

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Used to do a lot of that in the 80's we called it mileage rectification back then
 

GTVGEOFF

Member
Messages
381
Reading the last two posts, Mike, remind me, just how many miles had the Strand done when you sold it!!!
 

GTVGEOFF

Member
Messages
381
Mike, you won't believe this but in a couple of my cars the mileometer seems to be running fast, do you think you could adjust these please. I promise not to tell Dickie about your Strad :)
 

Gazcw

Member
Messages
7,696
Mike, you won't believe this but in a couple of my cars the mileometer seems to be running fast, do you think you could adjust these please. I promise not to tell Dickie about your Strad :)
Drive backwards. Be fine.
 

MaserMike

Member
Messages
329
A quick update folks, after managing to source and then replace all the main Transistors, ICs, Capacitors plus resolder some dry joints, I have put the odometer back together…. Ready to be installed back in the Testarossa…. Had to wait a few weeks for some of the rarer components to be tracked down and delivered, used silicone grease on the gears too as I was advised petroleum based grease will eat away at plastic!

Will only be able to test if it all works once the heater hoses and alternator have been replaced, lack of motivation in a cold garage and available free time have delayed progress…. At least I know for sure the power supply circuit and feeds work, as the attached clock comes on.

If it doesn’t work it will be the main IC 92967 RCA 606 which is faulty, but thankfully today after searching and contacting many global semiconductor specialists over the past several weeks - I have managed to source a few of these ‘unicorn’ chips. :cool: These should get delivered from the Far East and hopefully are the real McCoy. The only other source I found for these wanted $750 each + taxes and shipping…

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