Yes it does have a fuse. This will require you to remove the 8 screws from the metal housing. Then remove the housing. The fuse is located toward the back of the unit on the right hand side when looking down. It is a small 1amp, 250 V fast acting fuse, which can be found at Radio Shack if it is blown.
That said, there is no guarentee that this will fix your issue. I replaced the blown fuse and the unit still does not work. You maybe lucky and that solve the problem.
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If the internal fuse is okay, then what you got here is a bad power supply. Many power supply's do die with the internal fuse intact what happends is the High voltage tranformer or relay goes out on you causing this to happed, Best thing to do is replace the unit becuase a new power supply would cost you more then the unit new. Let me know if you have any question.
The front panel display and buttons are completely nonfunctional and appear dead. The unit will do nothing more than display the following messages on the TV screen:
Interface error (and or) Interface error! Turn off the power
If a DVD or VHS tape was inserted prior to the error occurring, you won't be able to eject either from that point further. They'll remain stuck inside the unit until you've completed the repair detailed below.
Interface error! Turn off the power <--- explains how to completely restore your combo in less than 20 minutes by replacing a $1.59 part on the power-supply board. firstname.lastname@example.org
Hi, I have the same model PVR which stopped working in the same way, in answer to your question, yes there is an internal safety fuse located inside the case under the switch mode power supply cover, WARNING this cover protects against electrical shock, Ie there are full mains supply voltages under the cover so make sure that the power cable is completely disconnected before you remove the safety cover. if the fuse has blown make sure that you replace it with a quick blow compatible type.
Thi did not help in my case because a component had failed in the power supply board so I am still looking for a service manual, anyone know where I can buy one.
Did you check the fuse on the main board?? Just be carefull when testing this unit with it open as it has line voltage on the power transformer. Unless you get a multi-meter and a diagram showing you the power supply your dead in the waterman. Sorry but you need the proper equipment to work on these things. This problem might even be a bit harder to find for A tech as its a man made problem I would advise at this point to put it together abd take to the shop. Good Luck