Filled CM8833 II monitor repair and CHROMA/LUMA addition

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roy_bates

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this thread is for the repair of BarryB's philips CM 8833 II monitor that i offered to repair for the cost of parts and modify for chroma/luma

monitor had no composite input due to broken traces when it arrived and a broken front panel door.and a couple of loose wires.
and needed a service
the thread is just for feedback only as we organized it via pm after offering to do the work over at eab.

i hope your happy with your monitor when it arrives mate,and it gives you many more years service.:)

this was after i reinstated composite not long after it arrived.
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this one is the chroma luma mod half way through the repair(phono sockets have been removed to make repair easier for me to do due to making a choice to completely replace all the phono sockets as there was two broken traces under them and a bit of wear on the sockets)
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this one was after the main repairs just to show the two extra holes for chroma and the switch cap.
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this is the rear after completion.

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this is a picture of chroma luma on screen to show it working.

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i'll post the other two up tomorrow.i think one of the audio channels was not working properly when it arrived as well but since i had the back off it was working for a bit when i used it but i found it was the weight of the cables pulling the broken trace back together when i had the back off,this is now working now.

and..front door open.
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and..case closed:)
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One of the loose wires roy was referring too was me (y)

Are you posting pics too roy?
 
i can if you want me too mate,i'll put them up tomorrow after the door has set.:)

i'll put whatever relevant pictures in the first post.

lets hope the couriers dont kick this around too much on the way back after all this.:LOL:
 
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I know you've looked after it from the pm's we've had, so if it comes back sounding like a box of broken glass it won't be your fault!!

Payment for this has been dealt with and well chuffed with the service (y)
 
I know you've looked after it from the pm's we've had, so if it comes back sounding like a box of broken glass it won't be your fault!!

Payment for this has been dealt with and well chuffed with the service (y)

ive sent you a pm mate,i think i made a boo boo with the email i sent you via pm:picard

so sorry mate,i must be tired.
 
Looks fantastic. Hopefully get this Wednesday along with my C64 psu so I can finally get that up and running. The door flap repair was a bonus and last minute rush as i'd already boxed it up :picard

Get your orders in lads, a not to be missed opportunity (y)
 
could so solve one of the old myths and tell us how to he.. did you fix the broken front door? pretty please :-D
 
Nice mod, where did you tap the luma from (any pics) and is it a simple mod?
 
Nice mod, where did you tap the luma from (any pics) and is it a simple mod?


mate,its on the board.
you just add the missing parts.
this same chassis is used in the commodore 1084S-P1(it has chroma/luma on board),im not the first to do this nor will i be the last.:)
its also in the service manual.
here is the thread where i do it to my monitor after a flyback replacement and service.(look a bit further down the thread for a component list and where they go)
https://www.amibay.com/showthread.php?t=58683


any more questions?:LOL:


if anyone wants it doing,just let me know.
 
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Got the monitor back today, and she's back where she belongs!

Door is fixed, audio works, composite and C/L work! The pics roy posted are definitely from my monitor and show the extra phono and switch, here's a photo, check the Philips label as it's the same :)



/me hugs roy :oops:
 
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