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That is an nice-looking engine.  I also bought a used one at York.  Given the price of a 3-volt replacement board & the price of a new loco, you might want to study whether repair/upgrade might be worthwhile, especially if you can do the work yourself.  Do be aware that PS3 replacement boards may be coming later in the year.

Originally Posted by GGG:

John,  Actually I have removed capacitors and measured them.  Swollen and still no short at the capacitor.  Additionally it is always the same capacitor that shorts.  Not the similar others.  I just don't think the data fits.  Additionally, if my memory is correct, that capacitor issue was with a specific manufacture and specific computers.  Not every product from that time frame.

 

I have dissected the boards and replaced various components and it goes deeper than that specific Cap.  Normally the high amp short is allowed to persist, clears itself to an open.   G

I realize this has been a topic of intense discussion but let me ask the following question.

In the grand scheme of things surrounding the quantity of 5V boards out there and still running around layouts and on shelves everywhere, does anyone reallly, now really have to worry about owning one! Buying one un-tested I believe could be a problem so for sure know what you are getting, but beside that is this really a huge issue for a buyer/owner?

Hugh, my personal is still yes.  I still regularly regularly get 5V equipped locomotives with dead boards for repair, and most are a 100% write-off and replacement of the boards.  I've personally had three of the 9-10 5V equipped locomotives I have put their feet up for no apparent cause and require a replacement board.  Mine were all locomotives that were running normally within weeks of when they were just dead.  You also see stories here about folks that bring a 5V one off the shelf and it's dead.

 

I personally avoid purchasing 5V stuff unless it's cheap enough that I can see my way clear to replacing the board and still not feel I overpaid for the locomotive.  For the end user that will have to pay someone to replace the board, that computation is different than it would be for me.

 

John.

Interesting perspective but I guess that you and George who have done a volume of repairs over the years might have seen more than most. I have only seen a couple in my time and could always find a reason other than the capacitors as the issue board went bad, so my experience does not qualify as a benchmark here. Especially since I am out of the repair business.

Let me ask this then...

If you drew a curve over time on the 5V dead board repairs considering of course a ramp up in your business, does the curve stay constant or does it ramp up as time goes on. Other words, is the issue getting worse as time since manufacture grows longer?

I don't say it's the capacitors primarily, just that the boards fail and are unrepairable due to the way the sandwich is constructed.  The 3V boards can be separated and thus you can get to all the components for a much higher percentage of repair possibilities.

 

George has a much longer history on these boards, so he probably has better trend data.  From my more limited observations and experience, I stay away from the 5V boards if possible.

 

Last edited by gunrunnerjohn

Hugh, While I do keep repair records, I don't analyze it for trends.  I only look for failure mechanism and symptoms so I can figure out a repair faster.  But most of that information gets stuck in my head:-)

 

As John stated, you still get them in, and folks are not happy especially when they say it was low hrs, or worked fine when I put it away.   G

Thanks George,Thanks for your reply.

I really just was looking for a gut feel. Do you get one every so often or have they been ramping up over the years.

I just don't think the world of PS2 5V owners should become overly concerned with the engines they own. S---! happens! and that is the way it is with electronics. Mechanics too, just look at hard drive failures.

I said I suspected that a number of the failures I have were bad caps and then the diodes croak.  So, if that is indeed the case, replacing the suspect 330uf cap would potentially prevent that particular failure.

 

I looked at my junkbox of 24 5V failed board sets. Nine of them had the bulged cap, and all nine of them were the same brand, WinCap.  There were at least two other brands of caps in the remaining 15 boards, however NONE of them were bulged.  There were three or four WinCap caps that appeared normal as well.

 

I find it a bit tough to swallow that the other 10-11 boards with a different brand cap never suffered the same failure if it's not at all related to the cap.  I'm sure there are a number of failure modes, I know for a fact that several of these boards went up in smoke when the output FET croaked from a motor stall or shorted lead.  I successfully repaired one of three that had that failure, it's very difficult to get the new FET and heatsink on without killing it, at least for me.

 

I am getting tired of this flash stuff and all of these board problems with O scale. When they started Proto 1 it should had never had a battery. This should had started from track power and charged some capacitors up before it would even moved. Using a battery, its like using a flash ligh, no technology to figure this out I guess. Maybe I should had stuck with HO scale.

From page 39 of The DCS O Gauge Companion 2nd Edition:

Under DCS 4.10 or higher, to recover a PS2 engine that has a DCS ID# that's outside of the normal range, proceed as follows

• Set the engine on a piece of track controlled by TIU #1. The Recover Engine feature only works with TIU #1. You must not have any other engines powered up on any track connected to TIU #1 while attempting to recover an engine

• Apply power to TIU #1

• Power on the DCS Remote 

• Press the Menu button and use the thumbwheel to scroll to SYSTEM. Press the thumbwheel to select it

• Use the thumbwheel to scroll to RECOVER ENGINE. Press the thumbwheel to select it

• The remote will display "Attempting Recovery of Lost Engine, Please wait!!!"

• If the remote is able to recover the engine it will display "Engine Recovered" and return to the Engine Setup menu. The newly recovered engine will be automatically Factory Reset by the remote. Refer to section DCS Menus, Advanced Menu later in this book for an explanation of the Factory Reset command

• Turn TIU #1 off and then back on

• The engine may now be added to the DCS remote using the ADD ENGINE command as described in section DCS Menus, System Menu earlier in this book

 

This and a whole lot more is all in MTH’s “The DCS O Gauge Companion 2nd Edition", available for purchase as an eBook or a printed book at MTH's web store!

 
 
Last edited by Barry Broskowitz

Sorry, but following this procedure does not work.

 

Power on the DCS Remote 

• Press the Menu button and use the thumbwheel to scroll to SYSTEM. Press the thumbwheel to select it

• Use the thumbwheel to scroll to RECOVER ENGINE. Press the thumbwheel to select it

 

When I follow that verbatim, I don't find those entries.  Your list specifically starts with a power on.  If I follow that script, I don't get to home plate.

 

It is wrong in the electronic copy as well.

 

You have to add the step for ENGINE SETUP for it to be correct.

 

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