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Find replacement for MHZS CD33E PCB board

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1#
spells 發表於 2008-8-9 08:10:15 | 顯示全部樓層 回帖獎勵 |倒序瀏覽 |閱讀模式
Hi Guys
Iam new to this forum,
I needed help to find a MHZS cd33e pcb board for the tube output stage,
hope some one can help coz i cannot find any repair shop
in Singapore to repair.

Cheers
2#
 樓主| spells 發表於 2008-8-9 16:27:04 | 顯示全部樓層
Thanks alfcat for the reply,

I cannot write or read chinese  :cry:

The board with all the parts on cost Yen $ 900! Almost half the price of the CD player.


Is it worth getting the replacement parts ?

Using DAC the sound ok, but using the analog sounds distorted

Thanks again
3#
 樓主| spells 發表於 2008-8-9 19:18:52 | 顯示全部樓層
alfcat thanks a million pal

how abt i sent you the board & you have a look what's the problem
since you are very good in mod  

ah since iam so new to this forum, are we allow to type out address or email ?

alfcat i took the pic from your post
4#
 樓主| spells 發表於 2008-8-9 19:27:52 | 顯示全部樓層
900 yen = 12 singapore dollars
quite ok for the price

cheers
5#
 樓主| spells 發表於 2008-8-10 04:49:17 | 顯示全部樓層
Thanks alfcat

I think no point in repairing ,
i stick to my musical fidelity A3 cdp

alfcat you have been such a great help  

cheers
6#
 樓主| spells 發表於 2008-8-11 07:37:48 | 顯示全部樓層
ok thanks

Only problems is when using the analog output the sound distort,
using the digital output via DAC sounded Ok.

I try changing tubes so same problem.

Any help would be great  

Many Thanks
7#
 樓主| spells 發表於 2008-8-11 13:35:10 | 顯示全部樓層
Hi accphoto
Thanks for the reply

It was working OK for few months, thought it was the tube, change a few
tubes also same problem, sound distorted.

One of my friend say must replace the PCB board, but for
$250 Singapore dollars not worth to replace, coz i bought it 2nd hand
for $450 Singapore dollars.
The unit looks as good as new, only the pcb board got problem.

alfcat my board no. same as yours
CD33A. PCB 2006-8-18
8#
 樓主| spells 發表於 2008-8-11 16:52:12 | 顯示全部樓層
Hi viewer
Thanks for your reply  

Both the white & yellow are fixed well

regarding resistors & caps i know nothing  :cry:
9#
 樓主| spells 發表於 2008-8-11 19:20:12 | 顯示全部樓層
Thanks for everyone help  

Maybe you are right Cat
Just give up  :?

as for the distortion, the vocal don't sound right, sometimes no sound
come out.
BTW Thanks again guys for the help   

Cheers
10#
 樓主| spells 發表於 2008-8-13 18:33:01 | 顯示全部樓層
Ifu decided not to repair it, then u mau consider to remove the tube output stage and use it to reconstruct a tube buffer. then u can use optical output to DAC then into tube buffer.

if sound some times has, sometimes don't have then check the connection of the cable from the board to the RCA connector and also check the capacitor nerest to the tube at output stage. since this cap very near to the tube it might be damage by the heat from the tube.


Thanks for the suggestion

The CD33E still looks new, wasted to chuck in one corner, but after listern
to my old Musical Fidelity A3, the A3 still sounded much better than the CD33

Cat i might buy a DAC to setup another system using the CD33

Thanks Again Everyone  :wink:
11#
 樓主| spells 發表於 2008-8-14 04:48:25 | 顯示全部樓層
You haven't tell us whether you know how to Do It Yourself (you a DIY guy or not?). As a transport, the CD33 is not very good, the CD is just a cheap SONY model.


I try hard to learn diy, so far i only know how to take out the PCB board
:
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