Comments on: Yaqin Service

By: stephen

stephen — Mon, 01 Mar 2010 22:30:14 +0000

The mc 10-l I have is a lovely looking amplifier but the mains hum from both channels (mainly right side) Is driving me mad!! I live in the uk my supply measures 244v (quite high but within tolerance) Ive tried changing the capacitors but I’m beginning to think its the actual power supply transformer as its becoming noisier as are the hum from the speakers has anybody had any similar experiences?

By: adrian hall

adrian hall — Mon, 01 Feb 2010 18:47:06 +0000

Hi, Do you have any experience of the MS 11b phono stage? If so what do you think of it.

By: stephen.

stephen. — Fri, 15 Jan 2010 23:44:42 +0000

Hello,
Ive brought a yaqin mc10 l amplifier which I love but a couple days after i first used it, Its developed a noticeable hum in the left speaker side The right side starts to hum slightly about 20 seconds after the amp is first switched on but it then quietens up but the left side stays noticeably louder.
If i remove the el 34’s from the left side; it stops but I’ve tried swapping the right valves over thinking that it maybe faulty el34 valves but its still the same
I was just wandering if you have had any experience with this fault before.
Best regards;
Stephen. (s.rucki@yahoo.co.uk)

By: breton51

breton51 — Thu, 18 Jun 2009 20:27:36 +0000

Hello,

I have a problem on a valve of the amp.
when I turn on the heating lamps normally then after some seconds the sound is active. the problem is that the lamps of the power stage from the right channel red directly (30 seconds) they are glowing and emitting blue sparks.

By: Dan Ashby

Dan Ashby — Thu, 21 May 2009 18:53:16 +0000

Have you checked the fuse? It’s right where the mains lead goes in, in a sort of clip out section. They often blow on these amps. If literally nothing works this may be it. Obviously if things get hot and valve glow then the electricity is getting through and you will need to take it to a repair centre.

Dan

By: adam

adam — Thu, 21 May 2009 18:38:01 +0000

Hi Dan,please can you help me! I have an mc10l valve amp that i loaned to so called friends,when i got it back nothing worked!They did say one of the valves was not working properly,so i ordered 2 replacment valves el34b.I have just put them in and still nothing,ive checked the leads and its working ok,im not very technicaly minded,and bought the amp because i love the sound from it.Im really gutted its not working and i live in cyprus,please can you advise me of anything i can do myself or who should i take it in to,to look at it.
kind regards adam

By: Dan Ashby

Dan Ashby — Thu, 02 Apr 2009 13:24:52 +0000

Hi Ryan. I’m in the UK and wouldn’t be able to supply you. Sorry,

Dan

By: RYAN

RYAN — Thu, 02 Apr 2009 13:13:03 +0000

can i purchace tube amps directrly fro u..where can i find a place to buy a tube amp and a tube cd player made in japan im in canada thanks ryan

By: Dan Ashby

Dan Ashby — Thu, 05 Feb 2009 10:04:38 +0000

Try looking on the links on the right and clicking on the one that says MS-12B. That works for other people.

Dan

By: stephen

stephen — Wed, 04 Feb 2009 19:57:51 +0000

i need wiring schematic for yaqin ms12b preamp anyone got one??
also does anybody know what tubes i should upgrade to?? i need
1 to 1.2 volts output….not .7 volts…thanks in advance.

ps- i like the yaqin Stuff….cheers