I have just repaired a faulty Meridian 204 Tuner (cannot be turned ON) and would like to share some photos.
Front Panel Module
http://i20.photobucket.com/albums/b206/etsang3/Meridian 204 Tuner/CN1displaymodule.jpg
Change to IC socket for easy maintenance
http://i20.photobucket.com/albums/b206/etsang3/Meridian 204 Tuner/AddICsockets.jpg
The Logical Control Board
http://i20.photobucket.com/albums/b206/etsang3/Meridian 204 Tuner/MPUBoard.jpg
SAA3006(RC-5) output when Button #2 is pressed
http://i20.photobucket.com/albums/b206/etsang3/Meridian 204 Tuner/Button2.jpg
Add filter cap for lower hum noise figure
http://i20.photobucket.com/albums/b206/etsang3/Meridian 204 Tuner/Addfiltercap.jpg
SAA3006 and the control keys
http://i20.photobucket.com/albums/b206/etsang3/Meridian 204 Tuner/SAA3006Incircuit.jpg
SAA1061 for LED display
http://i20.photobucket.com/albums/b206/etsang3/Meridian 204 Tuner/SAA1061display.jpg
Display Module connection to front panel
http://i20.photobucket.com/albums/b206/etsang3/Meridian 204 Tuner/Keypanelconnect.jpg
Front Panel Module
http://i20.photobucket.com/albums/b206/etsang3/Meridian 204 Tuner/CN1displaymodule.jpg
Change to IC socket for easy maintenance
http://i20.photobucket.com/albums/b206/etsang3/Meridian 204 Tuner/AddICsockets.jpg
The Logical Control Board
http://i20.photobucket.com/albums/b206/etsang3/Meridian 204 Tuner/MPUBoard.jpg
SAA3006(RC-5) output when Button #2 is pressed
http://i20.photobucket.com/albums/b206/etsang3/Meridian 204 Tuner/Button2.jpg
Add filter cap for lower hum noise figure
http://i20.photobucket.com/albums/b206/etsang3/Meridian 204 Tuner/Addfiltercap.jpg
SAA3006 and the control keys
http://i20.photobucket.com/albums/b206/etsang3/Meridian 204 Tuner/SAA3006Incircuit.jpg
SAA1061 for LED display
http://i20.photobucket.com/albums/b206/etsang3/Meridian 204 Tuner/SAA1061display.jpg
Display Module connection to front panel
http://i20.photobucket.com/albums/b206/etsang3/Meridian 204 Tuner/Keypanelconnect.jpg
Hi There
i've got same issue here - did u replaced only the both SAA's ? or is the display module also affected ? (i have a newer design on PCB, do not need to unsolder it for IC change)
- what should i check before i plug the Mains?
thanks for any help, Mitsch
i've got same issue here - did u replaced only the both SAA's ? or is the display module also affected ? (i have a newer design on PCB, do not need to unsolder it for IC change)
- what should i check before i plug the Mains?
thanks for any help, Mitsch
Hi,
I recently replaced the battery on my 204 and initially it acts as if it was dead. Then after the battery charges up, works fine when coupled to my 201.
I recently replaced the battery on my 204 and initially it acts as if it was dead. Then after the battery charges up, works fine when coupled to my 201.
Yep,
my Meridian 204 tuner is also working again, but it was more then just the Battery to replace...it was:
key driver chip, display driver chip and even CPU!
i have a scheme as pdf if anyone needs it...
CPU: if there is something like in between Hi and Lo (+/-3V) on Busses, it has to be replaced...
a fine tuner who is worth to be repaired...i like it, but if anybody wants it, i cold even sell it...
stay FM!
my Meridian 204 tuner is also working again, but it was more then just the Battery to replace...it was:
key driver chip, display driver chip and even CPU!
i have a scheme as pdf if anyone needs it...
CPU: if there is something like in between Hi and Lo (+/-3V) on Busses, it has to be replaced...
a fine tuner who is worth to be repaired...i like it, but if anybody wants it, i cold even sell it...
stay FM!
Hi,
Please sent the PDF to hew128@hotmail.com
Don't suppose you have the RC5 codes for the 209 as well?
Many thanks!
Please sent the PDF to hew128@hotmail.com
Don't suppose you have the RC5 codes for the 209 as well?
Many thanks!
scheme!
this is what may help! good luck! sorry, no rc- codes...
this is what may help! good luck! sorry, no rc- codes...
Attachments
Last edited:
Many Thanks SMITSCH for your contribution ( your schemes ).
My Meridian is out of order :
- display panel with erratic functions
- battery NiMh < 0,5 volt
I will do changing to solve ( hope it the reason of troubles ).
Raymond
Pattern was lost while repairing PCB due to battery leakage. What is the connection of this pattern?
Microsoft OneDrive - Access files anywhere. Create docs with free Office Online.
We would appreciate if you could show the EPROM pattern picture.
Microsoft OneDrive - Access files anywhere. Create docs with free Office Online.
We would appreciate if you could show the EPROM pattern picture.
Meridian 204 FM Tuner - RF Input is loose, need screw type, and possibly a pin
Hello,
I love my Meridian 204 FM Tuner (and 508.20->.24 CDP).
My RF Input is loose and I disassembled the unit and a screw and pin appear to be missing.
Could someone please check their 204 and tell me what the screw type, thread type/pitch and if there is a pin to the left of the RF Input, and if so what size the pin might be?
I’m new and appreciate all the help from fellow audio enthusiasts.
Thank you, K
Hello,
I love my Meridian 204 FM Tuner (and 508.20->.24 CDP).
My RF Input is loose and I disassembled the unit and a screw and pin appear to be missing.
Could someone please check their 204 and tell me what the screw type, thread type/pitch and if there is a pin to the left of the RF Input, and if so what size the pin might be?
I’m new and appreciate all the help from fellow audio enthusiasts.
Thank you, K
- Status
- Not open for further replies.