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- Hp designjet T790 stuck on 20% initializing and the 79:04 er...

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09-20-2021 01:37 AM
Hello there
I Have a HP designjet T790 Printer
it stuck on 20% initializing and then after a while 79:04 error shows UP , I tried several Firmware Upgrade but The Printer won’t upgrade and a error with invalid firmware shows up , but I Downloaded Firmware From Hp website
here is whats things I Did till now
1-Replaced Formatter Board
2-Replaced Main PCA
3-Replaced Interconnect Board
4-Replaced HDD
5-Replaced analog Sensor
Is there any other soloution ? Thank YOu my friends
Solved! Go to Solution.
Accepted Solutions
09-20-2021 07:28 PM
Did you replace these components one at a time or replace everything? Most components must be replaced one at a time and at least five minutes of on time was pass in order for configuration data to be copied from one component to the next. Failure to do this will brick the printer.
I am a volunteer, offering my knowledge to support fellow users, I do not work for HP nor speak for HP.
09-20-2021 08:20 AM
try turn off printer from the back switch.... wait a short moment... pull formatter up , wait , then push down & turn on printer.
keep fingers crossed.... otherwise might need a new virgin hardisk....
good luck.
09-20-2021 07:28 PM
Did you replace these components one at a time or replace everything? Most components must be replaced one at a time and at least five minutes of on time was pass in order for configuration data to be copied from one component to the next. Failure to do this will brick the printer.
I am a volunteer, offering my knowledge to support fellow users, I do not work for HP nor speak for HP.