Repairing Faulty Power Vis

jkmuk · 30th August 2013, 10:04

Searching and reading through this wonderful forum's wealth of information I am able to gather that it may be possible to repair a failed VIS motor unit for a KV6. I have a failed power VIS motor in may car. This assertion is based on the club's VIS tester (which I now have by the way) failing to produce any movement on the power vis.

1. I tried to locate a 'how to' on repairing the vis and so far have failed. Would someone be kind enough to point me to any posting here or elsewhere that comprehensively describes how one might repair it?

2. Alternatively, would someone be able to repair it for me ? Happy to pay for repair or buy a working spare if that works out cheaper.

Thanks
Kanth

ZedTeeTee · 30th August 2013, 10:07

If you have no luck getting it repaired, I have a couple for sale

http://www.the75andztclub.co.uk/foru...d.php?t=155982

SD1too · 30th August 2013, 10:10

Kanth,

Club member Stocktake provides a refurbishment service for VIS actuators. If you send him a PM I'm sure he will respond with the choices available to you. You could repair it yourself (I did mine) provided that you understand electrical circuitry and can use a soldering iron and multimeter.

Simon

Canonite · 30th August 2013, 12:58

I'd also recommend contacting Stocktake. His refurbished motors are not just repaired, but many of the components are uprated to help prevent future failures. You can even have the option of a self test button, so you can check them anytime you like without the club tester.
Have a read up on his work here: http://www.the75andztclub.co.uk/foru...d.php?t=114817

jkmuk · 2nd September 2013, 09:48

An Update...

I removed and split the power vis and contrary to my expectation the inside of the viz was clean (perhaps like new) dirt or oil what so ever. When connected the vis tester in the opened condition the motor was spinning and depressing the micro switches stopped and changed the direction of spin as expected. THe PCB was all very clean no signs of burnout (excess current draw as noted in some posts)

I was not sure what to do next as everything seems to be working and so I put them back together and voilà vis started to work. All I did was split it open and then put them back together. I screwed the vis on to the manifold and I was pleased as the rattling stopped.

But the bad news came the next day when I took the car for a long drive on the motor way and pushed the engine really hard to reach all the high rev levels to activate both the vis actuators. The vis seemed to be working but not for long as I was back to square one when the power vis failed again.

This leads me to think that the vis definitely has a design issue of some sort and so a 'stocktake' refurbishment is what I need. Hopefully it addresses the design issues that the vis has.

Arctic · 2nd September 2013, 10:38

Quote:

Originally Posted by jkmuk

An Update...

I removed and split the power vis and contrary to my expectation the inside of the viz was clean (perhaps like new) dirt or oil what so ever. When connected the vis tester in the opened condition the motor was spinning and depressing the micro switches stopped and changed the direction of spin as expected. THe PCB was all very clean no signs of burnout (excess current draw as noted in some posts)

I was not sure what to do next as everything seems to be working and so I put them back together and voilà vis started to work. All I did was split it open and then put them back together. I screwed the vis on to the manifold and I was pleased as the rattling stopped.

But the bad news came the next day when I took the car for a long drive on the motor way and pushed the engine really hard to reach all the high rev levels to activate both the vis actuators. The vis seemed to be working but not for long as I was back to square one when the power vis failed again.

This leads me to think that the vis definitely has a design issue of some sort and so a 'stocktake' refurbishment is what I need. Hopefully it addresses the design issues that the vis has.

Dave (Stocktake) Vis will sort out your issues and as a better designed board there is also an option of having self test buttons

in my opinion it is not even worth buying secound hand vis when Dave rebuilds them so are in theory new and better than the original Arctic

KWIL · 2nd September 2013, 13:02

One of the standard faults is that the heavier plug contact strips do NOT solder very well to the pcb. It might look OK but I have had them intermittent. Clean and properly resolder, it might explain your in/out not working /working situation.

30th August 2013, 10:04	#1
jkmuk Newbie Rover 75 Contemporary Auto SE Join Date: Aug 2013 Location: Bucks Posts: 11 Thanks: 1 Thanked 0 Times in 0 Posts	Repairing Faulty Power Vis Searching and reading through this wonderful forum's wealth of information I am able to gather that it may be possible to repair a failed VIS motor unit for a KV6. I have a failed power VIS motor in may car. This assertion is based on the club's VIS tester (which I now have by the way) failing to produce any movement on the power vis. 1. I tried to locate a 'how to' on repairing the vis and so far have failed. Would someone be kind enough to point me to any posting here or elsewhere that comprehensively describes how one might repair it? 2. Alternatively, would someone be able to repair it for me ? Happy to pay for repair or buy a working spare if that works out cheaper. Thanks Kanth

30th August 2013, 10:10	#3
SD1too Doesn't do things by halves Rover 75 2.5 Connoisseur Auto (1999) Dealer launch model. Join Date: Mar 2007 Location: Former Middlesex Posts: 20,640 Thanks: 1,587 Thanked 3,749 Times in 3,181 Posts	Kanth, Club member Stocktake provides a refurbishment service for VIS actuators. If you send him a PM I'm sure he will respond with the choices available to you. You could repair it yourself (I did mine) provided that you understand electrical circuitry and can use a soldering iron and multimeter. Simon __________________ "Whatever is rightly done, however humble, is noble." Sir Henry Royce.

30th August 2013, 10:07	#2
ZedTeeTee This is my second home Rover 75 Saloon Join Date: Feb 2011 Location: Stanley Posts: 3,334 Thanks: 240 Thanked 303 Times in 172 Posts	If you have no luck getting it repaired, I have a couple for sale http://www.the75andztclub.co.uk/foru...d.php?t=155982

30th August 2013, 12:58	#4
Canonite This is my second home BMW 330d Tourer, MG ZT 180 SE XPG, VW Polo 6R 1.2 TDI Bluemotion Join Date: Jul 2011 Location: York Posts: 6,030 Thanks: 363 Thanked 574 Times in 319 Posts	I'd also recommend contacting Stocktake. His refurbished motors are not just repaired, but many of the components are uprated to help prevent future failures. You can even have the option of a self test button, so you can check them anytime you like without the club tester. Have a read up on his work here: http://www.the75andztclub.co.uk/foru...d.php?t=114817

2nd September 2013, 09:48	#5
jkmuk Newbie Rover 75 Contemporary Auto SE Join Date: Aug 2013 Location: Bucks Posts: 11 Thanks: 1 Thanked 0 Times in 0 Posts	An Update... I removed and split the power vis and contrary to my expectation the inside of the viz was clean (perhaps like new) dirt or oil what so ever. When connected the vis tester in the opened condition the motor was spinning and depressing the micro switches stopped and changed the direction of spin as expected. THe PCB was all very clean no signs of burnout (excess current draw as noted in some posts) I was not sure what to do next as everything seems to be working and so I put them back together and voilà vis started to work. All I did was split it open and then put them back together. I screwed the vis on to the manifold and I was pleased as the rattling stopped. But the bad news came the next day when I took the car for a long drive on the motor way and pushed the engine really hard to reach all the high rev levels to activate both the vis actuators. The vis seemed to be working but not for long as I was back to square one when the power vis failed again. This leads me to think that the vis definitely has a design issue of some sort and so a 'stocktake' refurbishment is what I need. Hopefully it addresses the design issues that the vis has.

2nd September 2013, 13:02	#7
KWIL Precise Rover 75 Tourer 2.5KV6 Connoisseur SE Join Date: Mar 2013 Location: Fleet Posts: 2,976 Thanks: 630 Thanked 617 Times in 480 Posts	One of the standard faults is that the heavier plug contact strips do NOT solder very well to the pcb. It might look OK but I have had them intermittent. Clean and properly resolder, it might explain your in/out not working /working situation.