Ich habe vor zwei Wochen ein GRYPHON Quasar GSR-7075 HV BEC bei fast-lad gekauft. Heute ist per UPS ein neues GRYPHON Quasar GSR-7075 LMT HV BEC bei mir eingetroffen.
So wie dem beiliegendem Schreiben zu entnehmen ist gibt es beim normalen GSR-7075 Probleme mit dem Antiblitz. Der Blitz beim Anstecken des LIPOs kann den internen DC/DC Wandler beschädigen. Deshalb hat GRYPHON seinen Kunden ein neues BEC geschickt bei welchem das Problem behoben wurde. Das finde ich sehr anständig von GRYPHON.
Ich denke mal dass es bald sehr viele der älteren BECs in den Kleinanzeigen geben wird obwohl GRYPHON im beiliegendem Schreiben seine Kunden dazu aufruft das alte BEC zu vernichten.
Es wird bestimmt auch solche Leute geben die das alte BEC in das neue Gehäuse packen und verkaufen. Ich werde heute Abend mal nachsehen ob die ßnderung auf dem PCB sichtbar ist und Fotos von beiden Versionen einstellen.
PS: Ich nehme an dass wenn man einen zusätzlichen Widerstand verwendet um den Strom beim Anstecken des LIPOs zu limitieren, dass man auch das alte BEC weiter verwenden kann.
Anbei noch der Text der dem neuen BEC beigelegen hat:
So wie dem beiliegendem Schreiben zu entnehmen ist gibt es beim normalen GSR-7075 Probleme mit dem Antiblitz. Der Blitz beim Anstecken des LIPOs kann den internen DC/DC Wandler beschädigen. Deshalb hat GRYPHON seinen Kunden ein neues BEC geschickt bei welchem das Problem behoben wurde. Das finde ich sehr anständig von GRYPHON.
Ich denke mal dass es bald sehr viele der älteren BECs in den Kleinanzeigen geben wird obwohl GRYPHON im beiliegendem Schreiben seine Kunden dazu aufruft das alte BEC zu vernichten.
Es wird bestimmt auch solche Leute geben die das alte BEC in das neue Gehäuse packen und verkaufen. Ich werde heute Abend mal nachsehen ob die ßnderung auf dem PCB sichtbar ist und Fotos von beiden Versionen einstellen.
PS: Ich nehme an dass wenn man einen zusätzlichen Widerstand verwendet um den Strom beim Anstecken des LIPOs zu limitieren, dass man auch das alte BEC weiter verwenden kann.
Anbei noch der Text der dem neuen BEC beigelegen hat:
Following an investigation we initiated on a Quasar GSR-7075 failure case, we have found through our own tests and through a third party laboratory and in addition with valuable information provided by our customers ( 4 in total on 1500 + units). That under certain vary rare conditions it was possible that the spark / voltage surge happening when plugging in the Rc model batteries could damage the onboard Dc/Dc converter chip (the V In pin of the Dc chip is a sensitive one).
After trying to reproduce the failure, we discovered that it could happen with FBL units depending of the frequencies chosen for the servos. It has not been easy to reproduce the problem, but we did manage to simulate it twice by very excessive and hard testing to units picked up randomly in the different batches. (we keep a few unit of each manufacturing batch to test and track down any possible issue raised by customers).
After extensive testing, we managed to isolate the problem (the V In pin of the Dc/Dc converter) and work on a solution. We had to produce new PCB's with a small resistor and an actuator on the V In pin to protect it from instant surges ( plug / unplug / plug).
The Quasar and Agena units are designed for use in large helicopters with high voltages. For these reasons, we cannot let a chance for a similar situation to happen again, even if we have numerous customers very happy with their units. Even though the likelihood of failure is very small we do not want to leave this to chance.
Gryphon is a small and almost new company ( just 3 years of existence) but we intend to stay in the " high quality" range of products. It has a cost for staying in this range, and sometimes some exceptional situations need appropriate handling.
For this reason, we have decided, with our distributors / retailers, to offer simply a brand new Quasar GSR-7075 LMT. We are still testing the Agena unit and will report back out findings shortly. If we find an issue here, these units will be replaced also.
We thank you for your attention to this important notice and request at this time that you stop using your Quasar GSR-7075 and use instead a LiFe battery pack or any other BEC system if you have one available.
All of our distributors have good customer tracking systems and it is possible them to know exactly who has purchased the units. A full batch of Quasar GSR-7075 LMT has been shipped to all of our distributors last week, and you will find in this parcel a new unit to replace your actual Gryphon Quasar GSR-7075.
There is NO need to ship back the old unit. At Gryphon, we do not refurbish our product. We repair them when it's a small repair requested by the customer, but we do not refurbish any unit. This is a mistake on our side ( we could not test ALL available combination of hardware and batteries ) so we will be shipping brand new units.
We count on our valuable customers to destroy the existing unit. The Case, Heatsink and connectors are compatible with the LMT version and can be used as spare parts. But the PCB must not be used and as a result of this there will be no need for you to ship back your old unit.
We are working with the distributors worldwide to remove any existing Quasar GSR-7075 from their stocks, which should be done by the end of this week.
If you have any further questions please contact your supplier or you may contact Gryphon directly. Contact name is Fabien, email is fabien@gryphon.fr and i will answer you as quickly as possible.
We thank you very much for your understanding and we are sorry for any inconvenience caused. If you have any friends using the Quasar GSR-7075, please do not hesitate to let them know about this replacement operation, but please tell them to wait to be contacted by their dealer / distributor (they should receive directly a new replacement unit in the next week or the week after depending of postage delays).
We thank you very much for your understanding,
Fabien / The Gryphon Team
After trying to reproduce the failure, we discovered that it could happen with FBL units depending of the frequencies chosen for the servos. It has not been easy to reproduce the problem, but we did manage to simulate it twice by very excessive and hard testing to units picked up randomly in the different batches. (we keep a few unit of each manufacturing batch to test and track down any possible issue raised by customers).
After extensive testing, we managed to isolate the problem (the V In pin of the Dc/Dc converter) and work on a solution. We had to produce new PCB's with a small resistor and an actuator on the V In pin to protect it from instant surges ( plug / unplug / plug).
The Quasar and Agena units are designed for use in large helicopters with high voltages. For these reasons, we cannot let a chance for a similar situation to happen again, even if we have numerous customers very happy with their units. Even though the likelihood of failure is very small we do not want to leave this to chance.
Gryphon is a small and almost new company ( just 3 years of existence) but we intend to stay in the " high quality" range of products. It has a cost for staying in this range, and sometimes some exceptional situations need appropriate handling.
For this reason, we have decided, with our distributors / retailers, to offer simply a brand new Quasar GSR-7075 LMT. We are still testing the Agena unit and will report back out findings shortly. If we find an issue here, these units will be replaced also.
We thank you for your attention to this important notice and request at this time that you stop using your Quasar GSR-7075 and use instead a LiFe battery pack or any other BEC system if you have one available.
All of our distributors have good customer tracking systems and it is possible them to know exactly who has purchased the units. A full batch of Quasar GSR-7075 LMT has been shipped to all of our distributors last week, and you will find in this parcel a new unit to replace your actual Gryphon Quasar GSR-7075.
There is NO need to ship back the old unit. At Gryphon, we do not refurbish our product. We repair them when it's a small repair requested by the customer, but we do not refurbish any unit. This is a mistake on our side ( we could not test ALL available combination of hardware and batteries ) so we will be shipping brand new units.
We count on our valuable customers to destroy the existing unit. The Case, Heatsink and connectors are compatible with the LMT version and can be used as spare parts. But the PCB must not be used and as a result of this there will be no need for you to ship back your old unit.
We are working with the distributors worldwide to remove any existing Quasar GSR-7075 from their stocks, which should be done by the end of this week.
If you have any further questions please contact your supplier or you may contact Gryphon directly. Contact name is Fabien, email is fabien@gryphon.fr and i will answer you as quickly as possible.
We thank you very much for your understanding and we are sorry for any inconvenience caused. If you have any friends using the Quasar GSR-7075, please do not hesitate to let them know about this replacement operation, but please tell them to wait to be contacted by their dealer / distributor (they should receive directly a new replacement unit in the next week or the week after depending of postage delays).
We thank you very much for your understanding,
Fabien / The Gryphon Team
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