ARCAM phono board (DIVA A85, FMJ A32 etc.)

[mayky]

Hi!
Does anyone have a good quality picture of the Arcam phono board? Both sides, soldering and the parts side.

• DIVA A85
• DIVA A90
• FMJ C31
• FMJ AV8
• FMJ AV9
• FMJ A38

 

[RM]

I have a complete phono board for the A85.

R

 

[mayky]

Thanks, but I will try to build one. DIY. Cheaper and good fun for me. Just some good picture needed for cloning.

 

[RM]

Then you’ll have to wait until Saturday for pictures. My unit is in Norway.

R

 

[mayky]

OK thank's

 

[RM]

I also have input board, main board and display board for the A85. All new of course.

Please PM if interested.

R

 

[mayky]

Thank's.
Could anyone measure some voltages in a working A85?

My amp has this voltages.

 

[RM]

It’s the standby transformer.

R

 

[mayky]

Yes i know, Voltages are strange to me.

 

[mayky]

Somebody else ?

 

[RM]

I checked, as it was not there I suppose I have sold it without remembering. Sorry.

R

 

[madis64]

DC you are measuring against what point?

 

[mayky]

On the graetz rectifier. + , - points

 

[madis64]

On the graetz rectifier. + , - points

Where is that?
You should measure across C227.
And you are correct - the measurement results do not make sense.

 

[mayky]

On the diodes legs, this is reachable.

 

[madis64]

On the diodes legs,

Measure on the voltage regulator legs (IGO), these are also reachable.

 

[mayky]

I meassured too, no change.
The 5v is present.
This is Your amp? What You meassure?
How many ohms is the secondary coil connected in parallel?

 

[madis64]

The 5v is present.

Good, stop worrying about the input voltage (unless the regulator or transformer is overheating) 🙂

This is Your amp? What You meassure?

Actually belongs to a friend of mine and unfortunately has "left the table" some weeks ago. Gave also all paperwork with measurement results together with it.

 

[madis64]

Digging through the photos - seems like I had ca 10V AC and 13V DC before the 5V regulator: