Hi Chartz

Hehe well there is a certain demand now for it. I think thats fun since it gives a longer service life for these BM:s. I am glad if I can help those with PCB:s that had gone too far to rescue.

I am glad to hear that my old thread was appreciated, it was a lot of work since my BM was over repaired and finally the guy had given up and sold it as is. However it was a fun job to get it into service again and it still works fine.

I dont know why I have only 5 posts, maybe all my old posts got into the archive. I have not been here for some years due to other priorities in life but finally Spassmaker found me somehow and I tried to log in and my account still existed, so here I am haha.

/Fredrik  

Hi everybody in the need of new boards!

I have managed to calculate some prices for you. It has got much cheaper nowadays compared to when I first made these boards back in 2010. At that time I think the boards set me back about 60 Eur or something per each if I remeber right. There was some interest in my PCBs back then but the price was too high. I agree with that.

Today (10 years later 😉 ) I can offer the PCB boards for these prices:

Power Amp (Module 5) - 16 Eur / each

Display (Module 8) - 22 Eur / each

I hope you find the prices acceptable. It includes the board cut out to fit the BM and it also gives me a small compensation for all the hours spent reverse engineering those boards to be able to make the PCBs.

If you plan to buy larger quantities (for example 10 PCBs) then I can probably make another price for you, just send me a PM.

/Fredrik

Hi John

Thank you very much for the pictures and explanation of the two versions of the CPU boards.

Hope we can find someone who have a scrap CPU board that I could take apart and use as a template to make a new CPU PCB.

I can definately recommend anyone to replace the board connectors, esp the female ones on the display board and wire harnesses if you have intermittent problems. The old connectors are probably worn out and lost their spring tension. I replaced my connectors in the old restoration thread. 

/Fredrik

Hi Fredrik,

The new board prices are acceptable I would say.

A Beoworld member just had a Beomaster 8000 restored for him in the USA and possibly has a spare Microcomputer board as he ended up creating a working Beomaster from two. I sent him a request to see if the extra board is something he will part with and a picture of what version it is. I am still thinking a new PCB should be based off the latter serial number boards. 

-John

Excellent prices.

I'll have two amp boards and a display board please!

John,

Probably my bad memory but wasn't it you who found a third version of the CPU board two or three years ago or so?
I remember discussing it (perhaps not with you) and we ended up deciding this must likely be B&Os latest (aftermarket) replacement board, seeing as the previous boards had problems.

I can't find any photos of it in my notes, but I seem to remember it being a very light green'ish color. 

Martin

Please keep in mind to NOT fit metal-film resistors in the output stage board in places where B&O didn't.
Fit like for like.

Martin

Dillen wrote:

John,

Probably my bad memory but wasn't it you who found a third version of the CPU board two or three years ago or so?
I remember discussing it (perhaps not with you) and we ended up deciding this must likely be B&Os latest (aftermarket) replacement board, seeing as the previous boards had problems.

I can't find any photos of it in my notes, but I seem to remember it being a very light green'ish color. 

Martin

Hi Martin,

You are probably right :-)

I will go through my collection and check them again.

John

Dillen wrote:

Please keep in mind to NOT fit metal-film resistors in the output stage board in places where B&O didn't.
Fit like for like.

Martin

Same as 10 years ago. Good advice.

sonavor wrote:

Dillen wrote:

John,

Probably my bad memory but wasn't it you who found a third version of the CPU board two or three years ago or so?
I remember discussing it (perhaps not with you) and we ended up deciding this must likely be B&Os latest (aftermarket) replacement board, seeing as the previous boards had problems.

I can't find any photos of it in my notes, but I seem to remember it being a very light green'ish color. 

Martin

Hi Martin,

You are probably right :-)

I will go through my collection and check them again.

John

 

I went through my Beomaster 8000 Microcomputer boards that I have on hand. I have two of the early type boards (the one with the soldered shut shield box) and I have four of the later serial number boards (with the easy, pop off shield box lids).

Of the latter boards, one has a PCB number of A802493 while the other three are C802493 PCBs. The early board that I have as a spare is marked F802401. 

Here are some photos.

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Here is an early PCB 9 with a later PCB 9.  Note the difference in the ground terminal posts on the rear of the board.

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So we'll see what is available when Fredrik is ready to work on the new board layout. If I have to I can probably sacrifice one of these later serial number working boards (Of course I will remove all of the components first :-) ).