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avatar: W Ma
W Ma
3 posts
Replied to W Ma's post on March 26th, 2018

The shaker cannot be switched on, has no signs of life at all.

We have checked the IEC lead for continuity and the fuse inside the UK 3-pin plug, there is a fuse holder in the side panel at the rear (near the IEC inlet) which is rated as T 0.1A and they all fine.

The two (over–current reset?) buttons on the LHS seem to be pushed, and checked the continuity of the pins, they are all fine.

Could you advice me with more info. or send me the engineering manual for tracing faults?

Thank you

Weiyao

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avatar: Claude Kutaka
Claude Kutaka
7 posts
Replied to W Ma's post on March 26th, 2018
Remove back cover of unit. With your hand, feel across fiberglass insulation. There is a small plastic switchbox with wire leads into and out. Press the small button to reset. I found this by sheer luck because Thermo tech support and documentation was terrible, so I had to troubleshoot by sight and feel. Hope this will help
avatar: Claude Kutaka
Claude Kutaka
7 posts
Replied to W Ma's post on March 26th, 2018
Remove back cover of unit. With your hand, feel across fiberglass insulation. There is a small plastic switchbox with wire leads into and out. Press the small button to reset. I found this by sheer luck because Thermo tech support and documentation was terrible, so I had to troubleshoot by sight and feel. Hope this will help
avatar: W Ma
W Ma
3 posts
Replied to Claude Kutaka's post on March 27th, 2018

Thank you for your reply. The back cover has been removed, but I can not fine fiberglass insulation and a small plastic switchbox for reset.

Do you have a photo or the model and S/N of the shaker?

The model we have is 4344, S/N: 109501-55 

KIns regards

 

Weiyao

 

avatar: Claude Kutaka
Claude Kutaka
7 posts
Replied to W Ma's post on March 27th, 2018

Please send a picture of your unit with back cover off

claude@cc.hawaii.edu

avatar: GSPell
GSPell
4 posts
Replied to W Ma's post on September 17th, 2018

On the power board, Thermo PN: 019-534-00, there is a 14 volt bias power supply module, PN: BPS-1-14-00, (or maybe BPSX now) that goes bad.

They're about $10 - $15 from Mouser.

I have changed about five of them now.

 

Scott.

avatar: W Ma
W Ma
3 posts
Replied to GSPell's post on January 8th, 2019

Dear Scott

Could you please let me know how to access to the power supply boards, we have opened the back and the bottom panels, but very difficult to access the PCB boards, where is the 14 volt bias power supply board located?

Many thanks

Weiyao

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