Sachsen 20841

P

Philbahn

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Your thoughts please. Just got hold of a generic sound unit and fitted it to this loco.
Jumping the wire from grd and 24 volt pins on the board. The sound took off like mad. Disconnected the wires and put the unit on the programmer (both lgb & massoth) every thing ok. Placed the wires to the sound unit on the track direct and the sound works as it should. So thinking I had connected the wires incorrectly I tried again this time a lot of hiss (and I don't mean steam).
Next thought Remove a chip and resolder two wires on to the track pins of the chip. Still got the hiss.
Think it might be a fault on the main board yet that reads ok
 
Thanks Paul taken the sound unit wires direct to track, without the loco fine place the loco on the track same noise. It is as though when you put an analogue loco on digitlal you get a frequency noise it is very similar
 
BTW every time i check it on the programmer it checks out clean
 
So it works ok off the track but the loco interferes?
That's weird but they both work ok on their own?
Only thing I can suggest is put them both on and programme the address together and see if that does anything to get them in synch. I've not come across odd stuff like this with LGB just ESU ones and they sort with a reset.
 
Apologies if the seems like a thread hijack but I'd be very interested if any solution is found and has any relevance to the following (similar?) issue.
I have fitted a couple of LGB generic (6500x series) sound units into mate's analogue locos and tweaked the CVs to best match the locos' starting voltages. Most of the time they are fine but the sound sometimes decides to go at full speed. Even cutting the supply to the track (they have storage capacitors) doesn't slow the sound down.
I have no idea what triggers them to go haywire, whatever it is appears to be random. I've even double headed two identical locos and noticed that one may choose to go haywire and not the other. On another occasion it may be the other one in the set up, and, very rarely, both!
 
Not a hijack by any means Neil, thats what I had this morning

Neil Robinson said:
Apologies if the seems like a thread hijack but I'd be very interested if any solution is found and has any relevance to the following (similar?) issue.
I have fitted a couple of LGB generic (6500x series) sound units into mate's analogue locos and tweaked the CVs to best match the locos' starting voltages. Most of the time they are fine but the sound sometimes decides to go at full speed. Even cutting the supply to the track (they have storage capacitors) doesn't slow the sound down.
I have no idea what triggers them to go haywire, whatever it is appears to be random. I've even double headed two identical locos and noticed that one may choose to go haywire and not the other. On another occasion it may be the other one in the set up, and, very rarely, both!
Click to expand...
 
Well after half an hours running now we know what it was I think. It stopped the massoth went into a hissy fit and smoke came out of the cab whoops!

Capacitor gone on the main board
 
Here is the board. The doughnut on the right is a transfomer in the centre are two chips one of which has melted and next to that the black thing is a voltage regulator and just a head of that thee remains of the capacitor

016402c2cbfd428895be57ef8bafe3b4.jpg
 
I have just kicked that board out of my Saxon as I put in a Massoth XLS and did a full rewire.
Free to a good home.
 
Thanks Alan but I have done the same

stockers said:
I have just kicked that board out of my Saxon as I put in a Massoth XLS and did a full rewire.
Free to a good home.
Click to expand...
 
I'll agree with you Steve. Pure greed:laugh::laugh::laugh::admire::admire:
 
I wish. Only one is mine.

Saxon Meyers :thumbup: -
4b422e366f76428080ac5c2d53bd5973.jpg
 
Hell fire they are multiplying faster than rabbits:rolf::rolf::rolf::rolf:
 
Again, I wish

afffe4ada658436291e958a69bfb9da7.jpg
 
Honest - only one is mine.:rolf:
e3651f0ae8204699a17eb3179c3da9b6.jpg
 
As regards the noisy, hissing sound, is the locomotive chipped for DCC operation only (analogue disabled)? I am wondering if prior the board self destruct, the loco was using the sound board capacitor as a standby DC source sense, confusing the digital control.
 
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