HP LaserJet 5550 Won't Initialize

[Bozermint]

Hello Community - My HP Color LaserJet 5550 control panel will not proceed passed  "Initializing..."

I did replace all four toner cartridges two days ago - but I did succesfully print after that

Now the control panel will not proceed passed  "Initializing..."

Any ideas on how to fix this?  Or who can I hire to fix this?

[Valsimot]

You can cold reset it for the first step of troubleshooting:

http://techzeus.com/everything-print/cold-reset/hp-color-laserjet-5550

[Bozermint]

Hello - Thank You for your response

I have done the Cold Reset and the 5550 is still does not proceed past "Initializing..."

Since my first post I have also pulled the board and re-seated the RAM and Card

I do not recall having a JetDirect card and there is only one card in the three available slots

Any other options I can try at this point?  Buy another board on Ebay?

[Valsimot]

It could be defective RAM, older laptops have RAM that you can use in 5550. If you can get a cheap board on eBay but with RAM and Flash SD card that would be great. Don't buy naked board unless you are 100% sure that your RAM and SD Card are in full working order.  

[Bozermint]

Hi Valsimot - thanks for responding again - one more quick question

I do see all 256MBytes of RAM looped thru before "Initializing..." without error reported - if the RAM were bad would the control panel display a message reporting Bad RAM?

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@Valsimot wrote:

It could be defective RAM, older laptops have RAM that you can use in 5550. If you can get a cheap board on eBay but with RAM and Flash SD card that would be great. Don't buy naked board unless you are 100% sure that your RAM and SD Card are in full working order.  

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@Valsimot wrote:

It could be defective RAM, older laptops have RAM that you can use in 5550. If you can get a cheap board on eBay but with RAM and Flash SD card that would be great. Don't buy naked board unless you are 100% sure that your RAM and SD Card are in full working order.  

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[Valsimot]

There is no information if the RAM is defective. Flash SD contains printers firmware so more likely to be Flash SD or RAM than a board.  I have replaced more defective RAM's and Flash SD cards than main boards on CLJ 5550.