MHZS CD 33/66/88 CD 盤問題

各位 MHZS用户, 請問你部 CD33/66/88有無讀唔到碟的問題出現? 例如放了碟入去之後話 No Disc, 退番你隻碟出來, 讀來讀去都找不到 Track 0 .....

CAT

Cat Sir

Yes, I have


1 forgot connect internal cable

2 cd head dead

得 DualXeon 兄一個人回覆, 真奇怪 ... 我重以為香港有好多MHZS用家 ....

CAT

For no disc :

1st case:

ribbon cable got hair line break

2nd case:
the connector for ribbon cable at pcb board deformed and cause bad connection --> change the connector then ok.

3rd case:

Laser head die --> change laser head --> ok


Disc tray can't move out after press eject:

check the cable connected from pcb board to the CD tray motor, this cable should be soft and move easily if not it will restrict the movement of the tray...(i think to motor power very small so little bit of restriction will block the tray's movement)

I still got one funny situation. The CD spins in the OTHER direction !

And one more case is the Laser Lens jumping up and down like doing Disco dancing. Of course it can't locate the first track or the TOC.

I have tried changing the Cable, the Laser Head Unit and checked all other cables ... still can't solve the problem.

CAT

i had the problem of spinning in opposite direction previously, after change the connector then ok already.

the original ribbon connector on pcb very loudsy, u just take a look at it, u can replace it using the connector on a damge kss-213s or q also can.

u just plug out the ribbon cable and check whether the center spacing of the connector is straight & even? even a little bit of deformed it will give the problem.
solder out the 16pin cennector a bot cumbersome, and u hardly get this part, easier way to to take it from and used/damge cd pickup...

god bless my player recently don't have eject problem, no disc problem for several months....

WINDWSS,

I have changed that cable already and I double checked other cables connecting to the CD tray with a multi-meter as well. All cables seem to work fine (of course I have to take them out first). That is why I feel strange about this CD player.

Just wonder whether the SONY CD drive is a poor designed one.

i last time also use multimeter to check it read ok but it won't work, can u take the picture of you ribbon connector, top view.

hmm, i had recheck my preamp... u r right the microphonics is from the tube.....

Dear ALL,

I went back to 深圳 on Monday and talked to the Dealer of MHZS there. He said I can take the Power Supply board back to him and he will take it to the MHZS factory for a checkup FREE of charge.

I will take my friend's board up when I have time to go there again, probably in late Sept.

CAT

WINDWSS,

I sold the CD33 out as spare parts 4 months ago. I am now using CEC Belt Drive + Transport.

CAT

i also wish to turn to CD transport later but until now still not able to find a suitable DAC.

1541A is too soft, no ohmmm for me, i don't like its bass... DAC-AH is harsh at HF and emphasis too much on the mid....

The CEC combo I am using is OKAY. I can't say too much about it as I haven't listen to many DACs.

But indeed, if I use the Coaxial cable instead of the superlink cable, there is a significant difference.

CAT

bad luck ...my transformer in my tube preamp gone due to lightning....

Oh, that is really terrible. I hope that is the only item that has been damaged.

FOr DAC, I recommend Lite DAC-60, cost only HKD 2,500 but a lot of room for modification. Once modified, it can ko DAC of ten of thousand dollars. ......

I think the price of the DAC-60 is much higher now because of the appreciation of the Chinese YEN.

The last time I went back to ShenZhen, the dealer said RMB $ 2300 or so. And we have to pay RMB $ 120 for shipping down to Hong Kong.

Accphoto, how much did you invest into the DAC-60? I think those on the left are "Airlink" transformers .... we can't find them anymore now .... Too bad.

CAT

Actually, it is still HKD 2,500. It is cheaper to buy in HOng Kong than in China.

Dear Accphoto,

Where can I get it at HK$2,500?

One day, I will get one and modify it to make a comparison with the CEC DAC. But I think you invested over HK$ 4K into the DAC-60, excluding the original HK$2.5K.

CAT

Call 源哥。I can borrow mine to you first for a few days before you make the decision. I do guarantee that there is a significant difference..... ^_^........

This month's budget already exhausted!! Invested over $ 3K for all those cables (tho' it is worthy and a long term investment). I can still borrow the DAC from you but no money left for DIYing.

Don't forget our project, ha...ha... I still have to pay you by the end of this month!

Thanks for everything!