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Get help with Large Format Printers, with direct access to all Latex Knowledge Center · Ask anything · Find anything · Share anything at HP LKC
Hamedrezaz
Level 1
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Message 1 of 3
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Solved!

Hp designjet T790 stuck on 20% initializing and the 79:04 error shows up

HP Recommended
Hp designjet t790
Microsoft Windows 10 (64-bit)

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 

1 ACCEPTED SOLUTION

Accepted Solutions
Repairatrooper
Level 13
Level 13
9,261 9,116 966 2,761
Message 3 of 3
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HP Recommended

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.

If you find the information provided useful or solves your problems, help other users find the solution easier by giving kudos and marking my post as an accepted solution.
I am a volunteer, offering my knowledge to support fellow users, I do not work for HP nor speak for HP.


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2 REPLIES 2
rubensanchez01
Level 4
130 115 1 6
Message 2 of 3
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HP Recommended

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.

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Repairatrooper
Level 13
Level 13
9,261 9,116 966 2,761
Message 3 of 3
Flag Post
HP Recommended

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.

If you find the information provided useful or solves your problems, help other users find the solution easier by giving kudos and marking my post as an accepted solution.
I am a volunteer, offering my knowledge to support fellow users, I do not work for HP nor speak for HP.


View solution in original post

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