Croft micro playing up

[Mikeandvan]

Just plugged the Croft micro back in after using a JVC ax z 1010 for a few months, and its not working, sound is distorted, using it with a 909, replaced the croft pre with a cheapy passive and that works, so fault is defo in the Croft.

[hifi_dave]

Check the fuse, if not it's a valve.

[Lawrence001]

Check the fuse, if not it's a valve.Agree about the valve, not sure how a blown fuse would make it distort though?

[hifi_dave]

I believe there is one for + and one for -.

[Mikeandvan]

I believe there is one for + and one for -.

Thanks Dave, which fuse do I check? And how can I tell which valve is playing up?

[eksiil]

it's mostly been the fuses in my experience. a blown fuse means heavy distortion.

they're at the back.

QUOTE=Mikeandvan;1153389]Thanks Dave, which fuse do I check? And how can I tell which valve is playing up?[/QUOTE]

[Lawrence001]

I believe there is one for + and one for -.Oh right makes sense now, I assumed it was just on the mains power.

[Audio Al]

Depending on age send it off to Glen for a dose of looking at :)

[Mikeandvan]

Tried again and was working, then nothing, was using a Graham slee phone stage through line 1, changed to line 2 all fine. So what's up with line 1?

[Lawrence001]

Tried again and was working, then nothing, was using a Graham slee phone stage through line 1, changed to line 2 all fine. So what's up with line 1?Is one pair a phono level input? Send some pics of the inside, from my experience line level micros have a single valve and phono level ones have 3 valves. That excludes regulator valves in the earlier (or perhaps some higher end later) models.

[Mikeandvan]

Is one pair a phono level input? Send some pics of the inside, from my experience line level micros have a single valve and phono level ones have 3 valves. That excludes regulator valves in the earlier (or perhaps some higher end later) models.

It has its own phono stage, but I prefer using my Graham Slee through a line stage. Its inputs are - phono, line 1, 2, 3. Line 1 doesn't work at the minute, line 2 does. Haven't tried phono or line 3 yet.

https://live.staticflickr.com/65535/48002092298_3cc0efb9dc.jpg (https://flic.kr/p/2g8MgF1)croft 1 (https://flic.kr/p/2g8MgF1) by Mike Van (https://www.flickr.com/photos/145505522@N02/), on Flickr

https://live.staticflickr.com/65535/48002094338_4d34bec197.jpg (https://flic.kr/p/2g8Mhhb)croft 2 (https://flic.kr/p/2g8Mhhb) by Mike Van (https://www.flickr.com/photos/145505522@N02/), on Flickr

[Mikeandvan]

it's mostly been the fuses in my experience. a blown fuse means heavy distortion.

they're at the back.

QUOTE=Mikeandvan;1153389]Thanks Dave, which fuse do I check? And how can I tell which valve is playing up?[/QUOTE]

There's only 1 fuse at the back, appears fine.

[Lawrence001]

I think the inputs should all be in the same circuit when selected so it might be the selector switch itself. have you tried fiddling it a little bit when the dodgy input is selected? From experience with other amps a channel can cut out this way and maybe distort (but usually at a low volume). Are all other line inputs ok?

[donmarrese]

Depending on age send it off to Glen for a dose of looking at :)+1
Difficult one, best send to Glenn...before you know it you'll have it back sorted.....and singing! I must admit, he is soooo reasonably priced ....

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[Mikeandvan]

I think the inputs should all be in the same circuit when selected so it might be the selector switch itself. have you tried fiddling it a little bit when the dodgy input is selected? From experience with other amps a channel can cut out this way and maybe distort (but usually at a low volume). Are all other line inputs ok?

Its working fine now, I guess it has an intermittent fault.

[Mikeandvan]

+1
Difficult one, best send to Glenn...before you know it you'll have it back sorted.....and singing! I must admit, he is soooo reasonably priced ....

Sent from my ONE A2003 using Tapatalk

I tried emailing him twice, no reply, I understand though, when work isn't worth it, I often ignore it myself.

[Ninanina]

I tried emailing him twice, no reply, I understand though, when work isn't worth it, I often ignore it myself.

I guess he's maybe just a bit busy... I've spoken to him via email a couple of times and he's normally very good at getting back.. don't give up as I'm sure Glenn will sort it out for you easily and fairly cheaply too ;)

[Lawrence001]

I guess he's maybe just a bit busy... I've spoken to him via email a couple of times and he's normally very good at getting back.. don't give up as I'm sure Glenn will sort it out for you easily and fairly cheaply too ;)England are playing a test series in South Africa, might be related [emoji38]

[donmarrese]

I tried emailing him twice, no reply, I understand though, when work isn't worth it, I often ignore it myself.Pm me your email address and I'll give him a nudge ..

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