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Jolida 202 integrated - input selector problem

50.126.27.153
Posted on May 26, 2015 at 10:33:00
dean_martin
Audiophile

Posts: 1747
Location: lower alabama
Joined: January 26, 2006
 My Jolida 202 integrated has developed problems that appear to be from the input selector. Scratchy static and channel loss are the main symptoms. It started with the "aux" input (4th position) and has crept into the other 3 input positions just recently. It acts like the selector can't find the right position for clear sound because I can adjust the selector slightly within each position to clear it up. Unit was purchased new 7-8 years ago.

I don't think it's something else but it could be. I have some spare preamp (12AX7) and driver (12AT7) tubes I can try. The right channel seems most effected, but I get static in the left channel too. I'm wondering if anyone has taken off a face plate and serviced their own selector switches. If so, could a simple cleaning with Deoxit help? Any suggestions appreciated. Thanks.

 

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Deoxit the sucker. /nt\, posted on May 26, 2015 at 10:50:44
Opus 33 1/3
Audiophile

Posts: 4184
Location: D.C. Area
Joined: February 19, 2014




Opus 33 1/3

 

Deoxit seems to have worked, posted on May 26, 2015 at 18:58:30
dean_martin
Audiophile

Posts: 1747
Location: lower alabama
Joined: January 26, 2006
 I had to take the bottom plate off and work on it upside down. I'm such a klutz. My on/off toggle switch is now reversed. Up is off and down is on. I'm not going back in there any time soon. I'll get used to the switch.

 

Deoxit seldom doesn't work on dirty contacts., posted on May 27, 2015 at 03:22:56
Opus 33 1/3
Audiophile

Posts: 4184
Location: D.C. Area
Joined: February 19, 2014
 I've got a noisy Noble wiper stepped volume control on my Forte' preamp. Fortunately it's only noisy when changing volume. When set, it's quiet. That's good because it's a sealed pot. No way to get Deoxit inside.





Opus 33 1/3

 

RE: Deoxit seldom doesn't work on dirty contacts., posted on May 27, 2015 at 11:33:39
dean_martin
Audiophile

Posts: 1747
Location: lower alabama
Joined: January 26, 2006
 I'm thankful that's all it needed. That was hard enough with 10 thumbs and a random selection of tools. Everything didn't go back like it was, but the sound/performance is just like it should be now. I didn't realize the input selector was messing with imaging/soundstaging too. Now, sound that is supposed to be centered is.

I have an old Parasound preamp that has some scratchy noise in the volume control too. Like your Forte, it's quiet once in position but is noisy when moved. I'll open it up soon to see if I can get the Deoxit to the volume control. I'm also thinking of opening my old Sansui integrated and giving that thing a good cleaning. It's been sittin' up for too long.

 

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