DX7 will not switch on....

[Guest]

My DX7 which I have out of the box for only the third time (it has not had any real use) will not switch on. I had not left the switch on or anything but it will just not switch on.
I have never charged it so I suspect the battery could be flat as it only has (factory charge) but I have now put it on charge (the polarity is definately correct as they set it for me in the shop and demoed it for me) - Problem is that it does not appear to be charging - the light on the charger will not illuminate as it did in the shop..the charger is a YES Universal 4

Has anyone had this problem before? Strangely I have had this with my CX2 TX which was replaced by Horizon Hobby.

Cheers,
Jack

[chugga-bug]

There's a fuse inside which quite a few people have had blow on them. (Not me). Don't know if it will stop it charging though.

[mattie-lodge]

It sounds like the little internal fuse has gone inside the set which is easy to replace.

Not to sure why it has gone though.

[mark Taylor]

have you checked the internal fuse?????
cheers

mark

[Guest]

Will my warranty be void if I open it up to check....it is only a few days old..

[Unsung Hero]

Looks like it only charges to 7.2 or 8.4 volts and your tx requires 9.6 So thinks there is your problem. you may have damaged your battery or the charger
J

My DX7 which I have out of the box for only the third time (it has not had any real use) will not switch on. I had not left the switch on or anything but it will just not switch on.
I have never charged it so I suspect the battery could be flat as it only has (factory charge) but I have now put it on charge (the polarity is definately correct as they set it for me in the shop and demoed it for me) - Problem is that it does not appear to be charging - the light on the charger will not illuminate as it did in the shop..the charger is a YES Universal 4

Has anyone had this problem before? Strangely I have had this with my CX2 TX which was replaced by Horizon Hobby.

Cheers,
Jack

[mark Taylor]

no
you can open it to adjust your throttle stick tension

cheers
mark

[funfreex]

If its not too much hassle I would definately take it back to where you got it!

[Si Goodchild]

They'll never know if you've opened it or not, so crack on. Unlikely that a low charging voltage will damage a battery or charger.

My DX7 came with a duff battery which was replaced by the shop (Inwoods). Could be that.

Si

[Guest]

Hmmm, not very good. They are about 25 mins away so not the end of the world. On the charger it says TX: 11.2V - 150mA - perhaps it is to much and took the fuse but its what I was told I needed for it in TJD Models.

[mark Taylor]

is the polarity the same on the charger as on the transmitter? as it could be for futaba?
which is the opposite to speccy/jr
worth a check as this could be your problem?
could have blown internal 20mm fast blow fuse
cheers

mark

[Unsung Hero]

I dont own a dx 7 but do own a charger that was for my jr tx the inside pole is negative and the out side is positive the opposite to futaba
?

[Guest]

Yup fuse is blown - The polarity is set by the instructions with the charger - its opposite to Futaba. Will get on the TJD tomorrow. I wonder if they supplied the wrong charger.

Cheers,
Jack

[Guest]

Can anyone confirm whether it is ok to charge this tx with a 9.6 NIMH at 11.2V from this charger? TJD says it is ok because that is what the fully charged total is...is this right....doesnt sound it to me!

I will be taking it back on Sunday with the charger to check..

[David Drew]

The voltage is fine.

A fully charged Tx batt is around 11.2v anyway. The 9.6v is the nominal voltage (mid)

David