MPC4000 cleaning, repair and improvements

yes I have the PCBs in hand and I must mount the prototype to test it and confirm the values. perhaps this evening or tomorrow
Horseclick can you send me your postal address by PM
thanks

Genesis92 wrote:yes I have the PCBs in hand and I must mount the prototype to test it and confirm the values. perhaps this evening or tomorrow
Horseclick can you send me your postal address by PM
thanks

done

thanks
for anyone who want to have an idea of the price, I've added the PCB price + assembling fees + components and the price seems to be near 22 euros for the inverter + led strip. without the shipping costs.
but we must have a pre-order of 10pcs to start a complete panel assembly. the prototypes are hand made xD
the other problem is the shipping costs when you are far from France.

Genesis, I sent you a PM with my email address. The cost is fine. Let me know what we need to do to get me on preorder.

Excellent news.

A version of this for the MPC 2000/XL would surely extend the life of the LCD too.

pre-order me in...

can we organize a forum poll ?

-i even want to take 2 if it takes (that much) to reach 10...-

j

yes, perhaps a poll will be a good idea. but wait for Horseclick to test the prototype and get its feedback on how it's easy to install when you do not have a high skill in electronics

i will be installing the day that i get it so hopefully none of you guys will have to wait long.

anything in particular you guys want to know ?

my main concern is removing the cf tube and glueing the leds in that plastic bit, everything else looks straight forwrd and i do believe Frank has got all the connectors so no need to snip any wires......

yes don't worry the tube is easy to remove and the led strip must fit in place (if I've not made a mistake in the design lol)

hello guys
I took the time to hand mount the prototype this evening.
here are some pictures.

the raw inverter PCB panel from the manufacturer:


a close view of one unit


withe the components to be mounted (only 16 parts are needed including the connectors)


the pcb assembled


and a close view


side by side with the original one used in the MPC4000 for the CFL tube (the one I've removed of my MPC)
I've used the same connectors and hole positions as the original one so it's a "drop in" replacement.


the raw led strip panel


and a close view of one unit with the leds


a close view of the assembled led strip


the complete assembly with the wires and connector (15cm for the red wire and 20cm for the black one)


powered up


close view of the two assembled boards




setting and measuring the led current (voltage drop through R7)


250mV


0.250/12 = 20.8mA -> great

measuring the voltage at the trimmer wiper for the right 20mA led current


measured at 2.40V


current consumption at the power supply measured at 126mA



Horseclick, I will send this prototype to you tomorrow I think.

awesome cant wait, lastly when you pry the plastic part on the screen,

did you use much force after you removed the plastic screws?



pm me and i'll hit you up with some paypal funds to cover your costs frank.

no don't worry it's easy to remove. I will make a guide to help you.

You got some cool toys Genesis. A Fluke and an Agilent!

Yes Juke.
tektronix for my scope, advantest for my 2.5GHz spectrum analyser and JBC for my soldering irons
when you are working in a lab you must have good (and trusted) tools

as promised, I worked on it today
I hope it helps
http://www.harpelaser.com/files/mpc_for ... _guide.pdf