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Nathan, Engineer
Category: Phone Systems
Satisfied Customers: 35996
Experience:  Residential and commercial systems.
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I have a Siemens Gigaset C475 phone and recently unplugged

Customer Question

Hi, I have a Siemens Gigaset C475 phone and recently unplugged the base to move the plug into an extension cord for other bits I needed for the internet. When I plugged it back in it was completely dead. At first I thought it might be a fuse in the plug but I noticed there are no screws on the plug to change the fuse. Could it be the fuse or something else and what should I do to get it working again?
Any advice welcome.
Thank you.
Submitted: 3 years ago.
Category: Phone Systems
Expert:  Nathan replied 3 years ago.
Hello, I’m Nathan, and I’ll be assisting you today. My livelihood depends on your positive feedback, so your satisfaction is my highest priority. Sorry to hear you’re having trouble.
Expert:  Nathan replied 3 years ago.
Is it the base that is not working, or the handset?
Expert:  Nathan replied 3 years ago.
Does the power plug (wall adapter) feel warm to the touch at all?
Customer: replied 3 years ago.
Hi NathanI'm not sure if it's the base or the handset that's not working. I think it might be the base as the other phone upstairs still seemed to appear to be working (but doesn't - ie no dialling tone but then I'm guessing it wouldn't do that if the base wasn't plugged in).Regarding the power plug/wall adapter feeling warm to the touch - I'm afraid I can't answer that as I unplugged it some time ago to try and investigate the problem (and initially change the fuse as previoulsy mentioned).Any ideas as to what the problem could be?Thanks.Pauline
Expert:  Nathan replied 3 years ago.
Do you have 2 handsets with this system?If so, plug the base station back in and let me know if the upstairs phone is able to work at that point, and you can check the temp of the plug after a few hours as well.
Customer: replied 3 years ago.
Morning Nathan!I have plugged the downstairs unit back in. There are no lights coming on on the base unit. And there is no red light on the upstairs phone (I think there is normally a light? - I can't remember). The upstairs phone is flashing the words 'base 1'.In terms of the wall plug temperature, I've only just plugged it in so I can let you know whether it's warm in a few hours...Thanks.Pauline
Customer: replied 3 years ago.
Hi NathanMe again - the wall plug temperature is stone cold.Thanks.P
Expert:  Nathan replied 3 years ago.
Good morning, thank you for the info, Pauline.Typically in this case we'd suspect the power plug. They usually warm up and dissipate heat during normal operation. You most likely just have a bad plug/adapter, which can be replaced:
Customer: replied 3 years ago.
Hi NathanThank you for this - I will order a new plug/adapter and hope this fixes the problem. Can I just check that this is definitely the right adapter (I know it lists my phone in the list of models it works with but the bit at the end of the wire (opposite end to the plug) looks different. That is, the end of my wire has a small round joining bit while the picture of the one you've recommended has a big square bit. And the model number on my plug is C39280-Z4-C608, whereas the one you're suggesting is C39280-Z4-C710.Thanks again.Pauline
Expert:  Nathan replied 3 years ago.
Thank you for the information, Pauline.They do change up the part numbers occasionally. I was going strictly by the base model, but since you were able to confirm the plug part, you should go with that one instead:
Customer: replied 3 years ago.
Thanks Nathan, I'll order a new plug part and see if that sorts it. I will submit feedback for you now.Pauline
Expert:  Nathan replied 3 years ago.
You're welcome, Pauline. If you have any other questions, just let me know. Otherwise, please do remember to rate my service prior to logging off, hopefully I have earned an “excellent”. I also invite you to contact me directly with any future support needs at Thank you, ***** ***** a good day,Nathan