How-to replace the LCD Display on Maxspect Razor R420R

[eitallent]

I purchased two 27" Razors and one had the LCD display go blank. The blue back light came on but no characters. So CoralVue was very quick to respond and I asked for them to send me the display and I would replace it rather than send the whole unit back, risking damage during shipping.

 

I have built three computers from scratch so I was confident I could manage this project. As it turns out it was so easy I feel any one can do it.

 

All you need is a small Phillips screwdriver.

 

If you have carpet on the floors, low humidity and often shock your self on door knobs it is best to always discharge the static electricity by grounding yourself before you touch the insides of the Razor or any circuit boards. You will kill the board if you zap it.

 

Unplug your Razor!

 

There are four small screws that hold the display panel to the Razor's edge. I found these screws are soft so care needs to be taken not to strip them.

 

Slide the panel off the razor slowly and carefully becase there are two ribbons that attach the mother board to the display panel.

 

 

Here you can see the two ribbons. One has a white plug which simply pulls off. The LDC connector ribbon is gold with a black end. It has no plug but is rigid at the end and is just pushed into the slot on the mother board.

 

 

Carefully pull the white plug out from the receptacle on the display panel. Now it is easier to pull the gold ribbon from the mother board receptacle. Here you see the white plug on the MB side and the gold ribbon with the black end on the LCD side.

 

 

 

In the picture above you will notice a small silver screw. You will remove this screw in order to slide the bar, that holds the LCD screen in place, out of the way.

 

 

Gently slide the bar out and lift the LCD out. Replace it with the new one remembering to have the ribbon in the right direction. Otherwise the display will be upside down. Pluggin in the white plug first amkes it easier to push the LCD ribbon back in place.

 

 

When you hold the gold ribbon do not hold it from the edges but hold it on its flat side. The ribbon is like film and will kink and possibly damaging the tracings.

 

 

You are now ready to slide the panel back into place. Make sure you line up the slots on the DP and the tabs on Razor body. It will not go back together properly without this step.

 

 

Place the screws back in. Again these are soft and easy to crossthread!

Do not over tighten these or you may have trouble if you ever need to get back in.

 

 

You are ready to plug in and program if needed. Good luck!

 

 

[CoralVue Aquarium Products]

Awesome job, thanks for documenting the replacement of the Razor's LCD screen. I'm going to bookmark this thread to use for future guidance.

 

Thanks,

 

Chris

[eitallent]

Awesome job, thanks for documenting the replacement of the Razor's LCD screen. I'm going to bookmark this thread to use for future guidance.

 

Thanks,

 

Chris

 

Chris,

 

Thank you for the kind words!

Thanks for your help in getting the item I needed. I really appreciate your professional and courteous customer service. The company is lucky to have you.

 

Regards.

[notwithit]

While its a bit... scary to think the lcd may go out.. The fix looks very easy. Thanks for showing!

[eitallent]

While its a bit... scary to think the lcd may go out.. The fix looks very easy. Thanks for showing!

 

YVW

[aliceni]

Thank you so much for the great info.

I followed the instructions and replaced a brand new LCD on my 2-year-old Razor.

 

However, my LCD screen seemed normal at first, but the next day, it started to flicker and sometimes the backlight is dimmed. So I turned it off and on, and it was fine for a while, and then it started to flicker again later.

 

Did I miss any step or can anyone think of any reason why the screen flickers sometimes?

 

Your help is truly appreciated.....