opa 627bp in MHZS cd33

Hi viewer,

Oh shit, i have send the cd player to the shop, but i didn't know the voltage are so low..... :cry:  mean is the relay problem, bcoz i have connected the RCA to ground, n each RCA with individual ground cable.... even if take out the RCA cable it still work, right? :wink:

Thanks for sharing. :wink:

Hi superwhite,
i measure the relay voltage also 5.6V.

From your photd, I foumd that the silver cable which connected with the grounding on the pcb is look like not fixed.

I would like to know what modification before the cd33 no sound.

Thanks for sharing.

Hi viewer,

Thanks for advice, i have send it to electronic shop to repair, so woundn't be able to listen maybe about 2MONTH!!!!!!!!    :cry:  :cry:  :cry:  :cry:  :cry:  :cry:  :cry:  :cry:  :cry:

but can you pls check for me the voltage for the relay? i have round with white colour, if cant measure, you can measure at the diode just beside of the relay, it actually same, thanks! :wink:

Hi windwss,

It is true, but I suggest add water not oly 火洒.

Thanks.

[quote:00c99e85c1="viewer"]Hi windwss,

I think your cdp's VDF was burn. call k.k.sir to help you.

Clean lease head:

use 火洒加水.塗在 cotton and clean the head

thanks.[/quote]

I think so...will ceheck teh voltage of the VDF tonight...., but the VDF shouldn't disturb the CDP to play right?

Some article advise not to use 火洒 because it will damage the front layer of the lens, is it true?

Hi superwhite,

I think the problem is caused by the relay, you try to replace it.



Thanks.

Hi windwss,

I think your cdp's VDF was burn. call k.k.sir to help you.

Clean lease head:

use 火洒加水.塗在 cotton and clean the head

thanks.

viewer,

By the way, what's the proper way to clean the laser head??

Look like superwhite is my good brother! my cdp problem then his CDP also follow.

Viewer,
i had follow you&kk sir suggestion to unplug &replug the MCU, also clean the laser head, apply oin at gear&motor. But didn't check the VFD volatage since i'm not sure what is VFD?? can u guide me to check this voltage? VFD stand for?

The result:
1) Still no display but can play certain CD (shld be good CD or CD with thicker al layer & better reflection), the laser head will only scan & play certain slecteded CD. It will not scan & play most HK make pop song CD and totally will not play the clone CD.

2) The MCU will have a "tak" sound when it ready to start play CD, is it normal? how to check whtehr MCU is good?

3) If the player is off >several hour,  it will need ~2-3time try (mean eject & insert again) even for "good CD).

4) It seems that the laser head become quite sensitive to the CD, so is it laser head problem? or the change of e-cap can cause the head become sensitive?

Recently i had change opa5532 to opa2604, 3pcs 4700uF/25v,(last 2weeks)
2pcs 2200/16v, 2pcs1000/16v ecap, 1pcs 470uf/35v (last week) -problem happen afetr 3day these cap change.


Thank you.

Hi viewer,

the only problem is the relay NOT TRIGGER, n i measure the relay voltage only 5.6V, do you know which is relay power supply?

Thanks.

Hi superwhite,

Sorry I have no experience on relay.

You can ask K.K.HO. who is expert in this.
If relay no sorting it is no problem.
Have you have the cables (ground) connected with pcb's RCA outup is well or not.

THanks

Hi viewer,

now, not only WINDWSS cdp problem, is my cd33 problem
i have solder out to test the connectivity, no sorting, look o.k, n can you try on the voltage of the relay n let me know the voltage? look like the supply for the 2 small transistor having some problem

Thanks for helping

HI WINDWSS,

You sd the cdp can play the cd now but no sound,  Is it correct???

I think the 2 small transistor were problem.

Thanks

Hi viewer,

i encounter 1 problem now, the relay not turning ON, no sound when CD is playing, i measure the VOLTAGE on the relay is only 4.6V, what counld it be? because of the 2 small transistor(BC337)? or other thing? PLS HELP!!!! :roll:

Thanks.

Hi windwss,

If checked overall is fine, that the problem occurred by the leaser head,
you may consider replace the leaser head or the motor of leaser head's machine or the wheel may broken.


Thanks for sharing.

Thank you all of you! very very thank you!

hi windwss,

MCU is the Philip marked at you photo.


Thanks for sharing.

Hi WINDWSS,

bring the cdp to my house, we check together, most is the supply voltage not reach the cd player,( i assume) so have to use meter to test the voltage. hei, your HP no service, cant get you.

Viewer,

thank for advise, will try out tonight!
by the way i'm not very understand KK ho's suggest,
may i know what the MCU? and what the VFD?

Hi windwss,

Have you try my suggection and KK Ho's suggection?????

have you test the cap is under working or damaged?????
have you try to replace the new cap ????
This cap i think is for power supply.
I have this problem. when add oil and check the wheels and clean the leaser head, it is fine.
Also check all the cables connection.
Have you release the electricity from the new caps. because it may got the electricity, when you haven't release it, it may attacked the IC.

Thanks for sharing.

viewer,

now there is no dispaly show at all....

pls refer picture is this 470uF/35v cap have any effect on the cd head/reader? wht's its function? i incidently damage the pad while change cap... so i just use pass by wire to connect....

hi windwsss,

1.Try to add oil between wheel and wheel of the leaser haed machine. it make it smooth. "click" sound may be occurred by this problem,
2.clean the leaser head may be dusty and dirty.

upon the above causes, the leaser cannot move at the right postion to read the cd.
If both cannot soft the problem. May be the control IC down.
SO must repair.
good luck!!!!!!!!!!!!!!!!!!!!!!!!

Thanks for sharing.

Dear All (special to viewer & superwhite),

I need help!!!!

Last night when i play the CD, half way of the song the CD player suddenly stop playing, i try to press play button and the display show "no disc" then i try eject n replay the disc turn a few round then show" no disc" change to other disc, at 1st show no disc, then try to tighten the connection, and try again, then one a while can play a CD. But show no disc again when change disc.
try plug & replug the cable...still no improvement then the display is totally gone(no display at all).

the power led is still on(ok), tube power ok(stil got light), cd player mechanism still ok can eject &put in disc. when press play button can hear a "click" sound but no disc movement.. the cd head won't move to detect the disc.
Is there any sensor responsible to detect the CD? which cable is responsible for the display & cd head sensing? (the flat cable?

Superwhite, i will trouble shoot again tonight, if still can't work then need your help oh!!!

Hi all,

Did anyone try the option of taking out the opamp yet?

Trust me, it's amazing.

Hi Abhader08,

Be patient! i dont think you have run enough, 30 hour woh? you where got time to run????? try to run more before you give any comment..... :wink:
will place order tomolo for the Black gate. Be patient.

Hi WINDWSS,

Rubycon ZL is good , but dont have the value we want.......HOW? :roll:

[quote:047cb6be0f="Abhader08"]hi superwhite,

the panasonic cap really can not be used, the bass is terrible soft :x
it is not as good as rubycon, may be i have boil it enough time.
i think we should look for another brand, we have to do more reserch about this high value cap.
Your Chai chin old songs is with me now. better collect it back today cause the following days i am very busy, Saft singapore will send a representative come over i have to entertain him until 30th Nov.
how is our black Gate's order? r u done the purchasing?[/quote]

Abhader,

Be patient.... let the cap run >30hrs then only made decision (FC seems sound terrible before run in) ... besides, after u change the other small cap to BG, your bass will be ok...
I thought u like sofa sound.. ha..ha...
If after run in and install small BG cap still not satisfy then try change to rubycon ZL series loh.... (the ZL seems to have harder/tigher bass but not as sweet/musical as FC).

superwhite,

will you free for lunch this afternoon?
hush puppies having a warehouse sale nearby our office, r u interested?
the discount is up to 70%. is good to have a view, just come to puchong for lunch together then we go and have a look there. CNY is coming, we need to buy some new and cheap cloths.

hi superwhite,

the panasonic cap really can not be used, the bass is terrible soft :x
it is not as good as rubycon, may be i have boil it enough time.
i think we should look for another brand, we have to do more reserch about this high value cap.
Your Chai chin old songs is with me now. better collect it back today cause the following days i am very busy, Saft singapore will send a representative come over i have to entertain him until 30th Nov.
how is our black Gate's order? r u done the purchasing?

thank viewer for info.

Hi viewer,

Thanks, now i looking for clock....... :wink:

Hi superwhite,

If the sound no different, just the cap still good condition.

Thanks

[quote:bd29d84d16="viewer"]Hi windwss,

Elna duorex  is better than FC much, no need to changed la !!!!!!!!!!!!!!!!!
because Elan Duorex is best of Elna.

Thanks.[/quote]

Hi viewer,

Duorex is good cap, but what if run for more then 5000hour? is the cap still consider good?

Thanks.

Hi windwss,

Elna duorex  is better than FC much, no need to changed la !!!!!!!!!!!!!!!!!
because Elan Duorex is best of Elna.

Thanks.

Hi WINDWSS,

maybe will arrived next week or 2 more week, will let you know when arrived, dont worry. :wink:

you cant compare like this, it only on PAPER, no prove that it sound mush be good??? :?  right? you still need to try it out, before you can said 'good sound ', actually it still depand individual, no right or wrong. :wink:

superwhite,

so when the BG will arrive?? feel excited to try it...

i just otain my rubycon ZL from farnell..so tonight will repalce another 7caps...
later will change all small yk to ZA, middle-large cap to FC or ZL, important cap to BG....

Now start compare the elna spec with FC & ZL/ZL, if spec show FC or ZL/ZA better then will change all the old cap in my audiolab....

Hi all,

Look like the best choice is still the BLACK GATE, atleast until now. but unfortunate the choice of the cap not much n the price like boom. so got to max with other brand also.

Hi WINDWSS,

it is too old to tell you that actually what cap is is :roll: , i assume the cap also going to die liao

Happy to hear that the FC cap is back...... :wink:

viewer,

U r right, after run in ~20+hr, the FC perform better liao... clearity come back, vocal much nicer than the rubycon standard, bass a lot.....

Just to check with u, is the FC better than the Elna JRR and also the Elna duorex (old cap in my audiolab)??

Hi WINDWSS,

That truth! actually the MOST affected part is the power supply part, especially the 100uf 100V n the 47uf 160V, do you know why, is because the voltage go to the tube plate to amplify the signal, so if you use original cap, the quality of the cap no good, noisy n material of the cap also bad,  i need to said, change the power supply part will give you maybe about 30% of improvement(if you using BG N n FK series) :

Thanks for sharing

superwhite,

my cdp use mix quality of rubycon lah..got yxf, HR, YK(standard) and so on... let the FC run for more time then only can justify..... so far the improvement is less than change the 2pcs 100uF/100v YK to ZL.....

i had just send a list of BG i want to u just now!

Hi WINDWSS,

Maybe you CDP using the TOP QUALLITY rubycon cap......... :  :  : so no improvement loh :  :

Hi WINDWSS,

actually i only found out after change the 3 panasonic FC bass increase about 8-10%, no improvement on clarity yet, but improve on the POSITIONING also maybe 5%, total improvement actually is less than 8%, it due to the price.... :  :  :  bcoz is cheap mah, for me, i cant expect too much...... but for my case it actually help on Bass, more punchy n tight, not like last time soft. i think if all change to black gate..... my roof top will blow away.... :  :  :  

Thanks for sharing.

Viewer,

Thank you very much for your info & advice....

Hi windwss,

run in cap around 30 hours to 50 hours.
it must better than roybon stardand type.


Thanks.

viewer & superwhite,

last night i had replace 3pcs rubycon 4700uF/25v to panasonic FC. The initial result (1st 1-2hr) is terrible, sound like can't come out, stiff, not smooth, bass is increase a bit....but generally become slightly blur.... so i let it on for the whole night.....

then this morning sound slightly better, more smooth & better vocal & bass, blur reduce a bit but still not as good as previously...

Viewer in your experience normally, how long FC will take to be in good performance?

Hi Abhader08,

i know Harbert is GOOD, but what amp you want to drive her(harbert), goldmud or Mcintochs,  :  :  :  : , we stick to our first plan, change X'over cap n wiring. :wink:

Hi WINDWSS,

Thanks for advice, will consider first, as $$$$ is limited, so maybe will try to change the internal cable to UPOCC, n also the MOD the Xover to jensen cap. :wink:

Superwhite,

Since u already invole in DIY..so diy a proAc better than buy a new speaker lah...

i attch a simple picture another 3.5mb file on diy it can't be attached.... will put in pendrive later transfer to u.... Leda can provide u the exact material or even better material....on this...

[quote:d54a987775="superwhite"]Hi viewer,

Look like price not cheap, will compare whether change or MOD my existing speaker. can i change all the cross over cap to jensen copper oil, will this help? to improve the clarity n bass?[/quote]

Superwhite,

If u want proAC response 2.5, i will suggest u to make 1 (DIY), i got the diagram, and LEDA can sell u the kit include x-over... it is clone of proc Ac... then u just get some carpenter here to do the box for u in m'sia... total cost is ~RM 2000+ only....

superwhite,

next time sent email to these add for my personal stuff. My company email can be read by everybody in the office.

mengkean@gmail.com
dreamcastle16@yahoo.com

the speaker introduced by viewer are too costly. harbeth still the best choice and we can afford it. there are no more speaker like harbeth can perform. it is a all rounded speaker that provides good vocal sound, powerful bass, clarity in high frequency, reality sound field, the most importance is we can't get a speaker like harbeth that made in UK selling at this price.

focus audio review is good but it's not a uk made speaker. it's from denmark.

ProAc ofcaurse is a good brand but easyly cost more than 10K.

Sonus faber as you said it's very dissapointed.

Rockpoint is damn expensive

we have not much choices, if you ask me i will suggest these three brands:

Harbeth, spendor, b&w

you can choose based on your buggets. i only trust speaker from uk (made in England) especially old brand that more than 20 years.