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Yes - I too have been following with questions..
Show some pics of the welds when you get time.
As the post is fairly fresh I wanted to ask some questions as this was a model I was looking at for an upgrade..
""...Years ago I purchased a new Dynasty 350, SN# LJ030801L...""
-which would make it a 2008 vintage?
""....Yesterday I actually wanted to use it so I turned it on, expecting it to come to life exactly as it was when I last used it. Regretfully absolutely nothing happened. The display did not come on nor did the chiller or any other signs of life...."""
- I'm not sure but is this a pre-blue lightening unit?
""....I did check to ensure there was single phase power at the outlet. I plugged the Lincoln Power Mig 300 [also unused for several years] and it came to life without any problems. I then plugged the ESAB 875 plasma cutter [you guessed it, unused for several years] in and the power light came on...."""
"...Lincoln Power Mig 300 & I then plugged the ESAB 875 plasma cutter ...."
-both behave like reliable units
"""....It may be that PC5 is damaged or molex plugs on it are loose or corroded, maybe remove and reseat them. Molex plugs tend to corrode and not make contact if not powered on alot. Dielectric grease is whats normaly applied...."""
-Suggested troubleshooting remedies no problems here
"""....PC5 handles all the auxillary control, hense the curiousity of no display. Even if the machine was on fire, there would still be a display. Just has me wondering if PC5's connectors are corroded..."""
""".... Dynasty 350's are known for board probelms, and it would seem to be good customer...."""
-was plug corrosion the real culprit as suggested earlier???
"""....LWS called today and have it running. They say it was a little under $2200 to repair. They say they had to replace the main power board [PS1 from memory], both modules and both of the main capacitors....""
"""...Now that it has power I can ask it for the hours and starts.
Hours ... 3 hours and 52 minutes.
Cycles ... 482
I do not think this is an excessive amount of time or cycles but someone may be able to offer alternative thoughts....
"""...Anyway, at $2365 per hour [original cost of the TigRunner combination in February of 2008 plus this repair] it has turned into a rather expensive learning experience...."""
-You forgot the Downtime of not welding on your project-supposing this was a welding business with hired labour, initial troubleshooting time , trips to the LWS time/ gas transportation etc for 3 hours and 52 minutes-Welding time.
Yes it is expensive so what additional precautions / maintenance were you now advised to take so that it still works 5 years from now???
"""...Miller's suggestion was to install a new "Kit, Power Module and Interconnect Replacement". They also suggested that the two associated electrolytic capacitors also be replaced, "just in case". Then 'light a candle' and hope that nothing else down stream was toast...."""
- so were the electrolytic capacitors the culprits ? What were their final values ? Borderline?? 2008-2014 is 6 years of almost no activity for the caps and other semiconductors and yes the caps do have a storage/ shelf life & working life too.
My other question is if the thermal paste used between heat sinks and the hot semi conductors 'dry out' over time and need to be reapplied??? We have already read posts of the front membrane panels with stuck switches, and a remedy to unstick them.
There is little in the post which pinpoints the cause of the total failure of the miller machine not coming on other than which components needed replacement while the other machines were unaffected by the long layoff period. Did the very helpfull LWS / Miller support suggest reasons why the components failed the way they did and future precautions to take to prevent failures in the other circuit boards ???
Good to see responsible people on both sides stepping up to an amicable solution to a nightmare, but what can the end user additionally do to keep this model unit performing reliably in the future? ??
Other than what's in the owners manual, which a lot of end users Dont like to read.
Do they need to additionally physically take the 135lb unit to the LWS for a fit for service checkup before the big game starts??
Yes PR is good from time to time , but I'm more interested in the post mortem analysis of what actually caused the total failure of the unit especially so soon after the factory burn in period after manufacture? It wasn't a DOA unit after all.
""but at the time this neophyte considered the extra to be an investment against the unknown.""
-a lot of expensive unknowns with this unit hence the questions
Show some pics of the welds when you get time.
As the post is fairly fresh I wanted to ask some questions as this was a model I was looking at for an upgrade..
""...Years ago I purchased a new Dynasty 350, SN# LJ030801L...""
-which would make it a 2008 vintage?
""....Yesterday I actually wanted to use it so I turned it on, expecting it to come to life exactly as it was when I last used it. Regretfully absolutely nothing happened. The display did not come on nor did the chiller or any other signs of life...."""
- I'm not sure but is this a pre-blue lightening unit?
""....I did check to ensure there was single phase power at the outlet. I plugged the Lincoln Power Mig 300 [also unused for several years] and it came to life without any problems. I then plugged the ESAB 875 plasma cutter [you guessed it, unused for several years] in and the power light came on...."""
"...Lincoln Power Mig 300 & I then plugged the ESAB 875 plasma cutter ...."
-both behave like reliable units
"""....It may be that PC5 is damaged or molex plugs on it are loose or corroded, maybe remove and reseat them. Molex plugs tend to corrode and not make contact if not powered on alot. Dielectric grease is whats normaly applied...."""
-Suggested troubleshooting remedies no problems here
"""....PC5 handles all the auxillary control, hense the curiousity of no display. Even if the machine was on fire, there would still be a display. Just has me wondering if PC5's connectors are corroded..."""
""".... Dynasty 350's are known for board probelms, and it would seem to be good customer...."""
-was plug corrosion the real culprit as suggested earlier???
"""....LWS called today and have it running. They say it was a little under $2200 to repair. They say they had to replace the main power board [PS1 from memory], both modules and both of the main capacitors....""
"""...Now that it has power I can ask it for the hours and starts.
Hours ... 3 hours and 52 minutes.
Cycles ... 482
I do not think this is an excessive amount of time or cycles but someone may be able to offer alternative thoughts....
"""...Anyway, at $2365 per hour [original cost of the TigRunner combination in February of 2008 plus this repair] it has turned into a rather expensive learning experience...."""
-You forgot the Downtime of not welding on your project-supposing this was a welding business with hired labour, initial troubleshooting time , trips to the LWS time/ gas transportation etc for 3 hours and 52 minutes-Welding time.
Yes it is expensive so what additional precautions / maintenance were you now advised to take so that it still works 5 years from now???
"""...Miller's suggestion was to install a new "Kit, Power Module and Interconnect Replacement". They also suggested that the two associated electrolytic capacitors also be replaced, "just in case". Then 'light a candle' and hope that nothing else down stream was toast...."""
- so were the electrolytic capacitors the culprits ? What were their final values ? Borderline?? 2008-2014 is 6 years of almost no activity for the caps and other semiconductors and yes the caps do have a storage/ shelf life & working life too.
My other question is if the thermal paste used between heat sinks and the hot semi conductors 'dry out' over time and need to be reapplied??? We have already read posts of the front membrane panels with stuck switches, and a remedy to unstick them.
There is little in the post which pinpoints the cause of the total failure of the miller machine not coming on other than which components needed replacement while the other machines were unaffected by the long layoff period. Did the very helpfull LWS / Miller support suggest reasons why the components failed the way they did and future precautions to take to prevent failures in the other circuit boards ???
Good to see responsible people on both sides stepping up to an amicable solution to a nightmare, but what can the end user additionally do to keep this model unit performing reliably in the future? ??
Other than what's in the owners manual, which a lot of end users Dont like to read.
Do they need to additionally physically take the 135lb unit to the LWS for a fit for service checkup before the big game starts??
Yes PR is good from time to time , but I'm more interested in the post mortem analysis of what actually caused the total failure of the unit especially so soon after the factory burn in period after manufacture? It wasn't a DOA unit after all.
""but at the time this neophyte considered the extra to be an investment against the unknown.""
-a lot of expensive unknowns with this unit hence the questions
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