Taskalfa 4500i Dead Display

[Elmo]

Hi All
I have a taskalfa 4500i and a 3500i both machines powers up ok (scanner finds home and motors turn and complete warm up cycle)
but display is totally dead
any pointers before i start pulling them apart
is this a known issue on these machines

thanks in advance

[brunski]

Hi All
I have a taskalfa 4500i and a 3500i both machines powers up ok (scanner finds home and motors turn and complete warm up cycle)
but display is totally dead
any pointers before i start pulling them apart
is this a known issue on these machines

thanks in advance

I have the same issue on KM-3050...the machine is printing normaly but the copy function is not possible. The touch panel is working first 5 sec.#loading program# then go to totally black.

If someone have the same experience, please help.

Thanks

[Elmo]

I have the same issue on KM-3050...the machine is printing normaly but the copy function is not possible. The touch panel is working first 5 sec.#loading program# then go to totally black.

If someone have the same experience, please help.

Thanks

Brunski start your own thread you have a different machine with a different fault

[Elmo]

So far i have replaced parts from a working machine
control panel complete (checked wiring harness)
memory
HDD
power supply
but still no display light not even welcome screen
iam thinking control pba unless anyone has any ideas

[tmaged]

Do any of the hard switches respond ? Make sure YC24 is connected to the main pwb.

[Elmo]

tested all previous parts in doner machine all work ok

replaced main pwb
machine is now working correctly

[Has Been]

tested all previous parts in doner machine all work ok

replaced main pwb
machine is now working correctly

Loose / defective DIMMS

[Scottb]

main board fixed my issue like this

[madas]

Agree with scottb had 2 both times main board.

Les

[quitech]

Agree with scottb had 2 both times main board.

Les

Please my good friends, this machine is new in country, we are experiencing this problem and we don't have any place to purchase the main board, so what am asking is that what must be cause of this problem on the main board? If any knows please kindly tell me because I have 12 of this machines both 3500i, 5500i and also the color 4500ci are having the same problem, I need help from you guys because this machines are driving me crazy here