Lionel FEF-3 Smoke Unit (6-11131)

I have one of the older Lionel Legacy UP FEF-3’s. Recently the fan on the smoke unit has stopped working. From what I can tell is the board on top of the smoke unit is not sending voltage to the fan. I’ve looked on Lionel’s website and they don’t have any more of this type of smoke unit. So I’m looking for any ideas. I know this is a long shot but if there was a  schematic of the board I could probably get it fixed, but like I said that’s a pretty long shot. 

Original Post

If the smoke resistor is getting hot, check the 5V DC regulator circuit on the smoke PCB.  If the resistor isn't getting hot, and it's not open, it's probably the voltage regulator module.  I'd also replace the 6 ohm smoke resistor with the 8 ohm one, that was a recommended Lionel mod as the 6 ohm resistor was drawing excessive current and cooking the voltage regulator modules.

gunrunnerjohn posted:

I'd also replace the 6 ohm smoke resistor with the 8 ohm one, that was a recommended Lionel mod as the 6 ohm resistor was drawing excessive current and cooking the voltage regulator modules.

That may be painful.  The FEF is by far one of the best smoke producing engines Lionel made.  I understand why they recommend it, but ouch. Non modified smoker on medium.

Marty Eibeck

Legacy Users Group*** Meeting at York in the Orange Hall Meeting Room***Friday April 20th at 7:45AM

 

Below the Signature Line...

"When the sun goes down, it's time to put on long clothes."

 

MartyE posted:

That may be painful.  The FEF is by far one of the best smoke producing engines Lionel made.  I understand why they recommend it, but ouch. Non modified smoker on medium.

Marty, how many track volts there? We try to run at 16/17 max.

BobbyD posted:
MartyE posted:

That may be painful.  The FEF is by far one of the best smoke producing engines Lionel made.  I understand why they recommend it, but ouch. Non modified smoker on medium.

 

Marty, how many track volts there? We try to run at 16/17 max.

Can't say exactly as it wasn't on my layout at the time but the power sources were 180W bricks with TPC400s.

Marty Eibeck

Legacy Users Group*** Meeting at York in the Orange Hall Meeting Room***Friday April 20th at 7:45AM

 

Below the Signature Line...

"When the sun goes down, it's time to put on long clothes."

 

TedW posted:

Here’s the same smoke unit on “low” with the 8ohm resistor in 6-11127.  I had to rebuild this with a new pcb, wick and resistor some months back.  Not so bad IMO.

 

Ted

Thanks for posting.  The FEF is one of my favorites and the smoke units were well done.

Marty Eibeck

Legacy Users Group*** Meeting at York in the Orange Hall Meeting Room***Friday April 20th at 7:45AM

 

Below the Signature Line...

"When the sun goes down, it's time to put on long clothes."

 

MartyE posted:
gunrunnerjohn posted:

I'd also replace the 6 ohm smoke resistor with the 8 ohm one, that was a recommended Lionel mod as the 6 ohm resistor was drawing excessive current and cooking the voltage regulator modules.

That may be painful.  The FEF is by far one of the best smoke producing engines Lionel made.  I understand why they recommend it, but ouch. Non modified smoker on medium.

I just report the news Marty, I don't make the news.

gunrunnerjohn posted:

If the smoke resistor is getting hot, check the 5V DC regulator circuit on the smoke PCB.  If the resistor isn't getting hot, and it's not open, it's probably the voltage regulator module.  I'd also replace the 6 ohm smoke resistor with the 8 ohm one, that was a recommended Lionel mod as the 6 ohm resistor was drawing excessive current and cooking the voltage regulator modules.

I’d be willing to bet it’s the 5V DC voltage regulator. How would I double check that and proceed to fix it?

Unplug the fan and briefly try connecting a 9V battery to it and see if it spins.  If so, then I'd replace the regulator components.  I don't have one of those to look at to see exactly what parts are used.

The fan motor does work with a 9v battery. So the question is where is the voltage regulator for the fan. If it’s not on the smoke PCB then there are only 4 other PCB’s, the AC regulator witch from my understanding is only for the element, the motor driver, the legacy motherboard and the radio board. 7E9CFED6-F091-4591-BDCC-3C927E5D09070B182A01-429C-4A4E-BA01-9D7337D34D4F

Attachments

Photos (2)

On the bottom of that smoke unit PCB there three components that comprise the smoke regulator circuit.  They are a TO-92 5V regulator, a diode, and a 220uf filter cap.  The regulator circuit is powered from track power through the smoke switch, see attached diagram.  I'd be looking at those components first.

Attachments

Photos (2)
gunrunnerjohn posted:

On the bottom of that smoke unit PCB there three components that comprise the smoke regulator circuit.  They are a TO-92 5V regulator, a diode, and a 220uf filter cap.  The regulator circuit is powered from track power through the smoke switch, see attached diagram.  I'd be looking at those components first.

Thank you very much John! I’ll get a little more in-depth with it this weekend. One last question the bottom of my smoke PCB does look a little different and just want to be sure on the correct parts before I go replaceing stuff with the wrong element

Attachments

Photos (1)
zhubl posted:
gunrunnerjohn posted:

On the bottom of that smoke unit PCB there three components that comprise the smoke regulator circuit.  They are a TO-92 5V regulator, a diode, and a 220uf filter cap.  The regulator circuit is powered from track power through the smoke switch, see attached diagram.  I'd be looking at those components first.

Thank you very much John! I’ll get a little more in-depth with it this weekend. One last question the bottom of my smoke PCB does look a little different and just want to be sure on the correct parts before I go replaceing stuff with the wrong element

Never mind I looked at it closer it is the same board that regulator is just in a different package 

FWIW, I got a replacement board(only) from Lionel last April.  I bought a couple.  The web site said the whole smoke unit was unavailable, but when I called they had the pcb.  Looking at my records was charged ~$66.  You might call them n check.  Here’s a pic of the board(both sides) and their part tag shipped with them.  I’m pretty sure it’s the same one as yours.

6AEF4E36-5B62-45E3-93D9-CAF074CE5B4F

 

 

Attachments

Photos (1)

The larger regulator was doubtless an "improvement" as the TO-92 package was prone to dying due to overheating.  It'll be a LOT cheaper to replace the $2-3 worth of parts as opposed to $66 for the board!

gunrunnerjohn posted:

The larger regulator was doubtless an "improvement" as the TO-92 package was prone to dying due to overheating.  It'll be a LOT cheaper to replace the $2-3 worth of parts as opposed to $66 for the board!

Of course, you’re right about cheaper for parts.  The $66 is for two boards however, including shipping.  And, if it’s outside your repair comfort zone and you can’t identify and then replace/install the appropriate parts, well, as I said, FWIW...  

Add Reply



OGR Publishing, Inc. PO Box 218, Hilliard, OH 43026 330-757-3020
www.ogaugerr.com
×
×
×
×
×