Unable to find the parts

The most common causes are in order a blown fuse, perhaps caused by a faulty output stage. Transformer faults. Other power supply faults. Have a look inside you might seen the part that has gone!

The fuse is blowing due to an overload. It's often and very likely caused by a transistor or ic that has gone short. The main culprits are the power transistors of the amp or whatever is on the big heat sink. Transistors will show the fault when you connect an ohmmeter to the terminals. It will be just like you have touched the test prods together! I don't think in your case it will be in the power supply. It's often caused by speaker cables that touch together.

Hello and welcome to FixYa

DL f is a door lock error and is caused due to an issue with the door lock when it is unable to lock/unlock. Please check the door lock mechanism/door switch assembly and replace the part that has gone bad so that the issue is resolved. Please get back to me if you have any other questions.

Kevin

Shop No 1, Trishul Apartment, Near New Era Cinema, S V Road, Malad West, Mumbai - 400064
+(91)-(22)-28891456, 28884383, 28885610 +(91)-(22)-28891456

Mr Jayantilal Gala,Mr Ramesh Arora(Manager)
+(91)-(22)-28821236, 28823507, 22908615, 28813860
+(91)-9833605637, 9819319955, 9820381212, 9987849878
Opposite Natraj Market, Near Bombay Dyeing, S V Road, Malad West, Mumbai - 400064

+(91)-(22)-26866217, 26866218, 61713333, 66227722
+(91)-(22)-26866219
www.vijaysales.com
The HUB, Nirlon Compound, Near NSE Ground & Aarey Milk Colony, Western Express Highway, Goregaon East, Mumbai - 400063

The chances are that it does so due to a faulty part. Often these protection circuits are to detect an overload in either the power supply or the main amp section. Sometimes it's due to a speaker wiring problem, cables that are not suppose to touch - touching. They sometimes reset when either the overload has gone or the wire touching has been corrected. This sounds like it might be too late, and now a semi-conductor (on the heatsink) is acting like a piece of wire! Tripping the circuit. If you get power to the unit (lights etc) then it's probably not the power supply section to blame.

There are no chronic failure parts.

Faders that get contamination in them can be a problem.

The external driver chips CAN be damaged when people connect the unit to amplifiers that are run from a power source at opposite ends of an auditorium for example, due to common mode ground loops and faults.

Setting up a system is one part knowing what equipment is needed and one part electrical engineering regarding safe interconnection of low level audio signals.

Get hold of a Servisol freezer spray, from either Maplin or Radio Shack, depending where you live. Take the top off and look inside. Locate the output transitors for the right channel and with it powered up wait for the fault to go away. Then with the spray, squirt any of the transistors you suspect. If it starts up (the fault) after the spray, that part has gone!
Do them one at a time and wait a while before spraying the next part. If you find one that acts up, to make certain, warm it back up by touching it with a soldering iron. Then freeze again.

THIS MAY BE NORMAL. The starting transients can trip RCD's or GFCI's as we know them due to high frequency components that are not balanced due to capacitive coupling. IF you have the inputs connected to OTHER devices such as effects modules that also have line power to them there may be a ground loop.
ALWAYS connect any interconnected device to the same power source for equipment safety. Behringer is stingy on schematics.
You MIGHT try using a decent line filter to supply the unit. It has been a while since I repaired my 1000, but I don't recall any specific thing in the design to unbalance the current, HOWEVER the power does go through a thermal switch on the heat sink for the power transistors and the wiring CAN be dressed so that it might couple to the other internal wiring AND the safety ground. Suggest you try a small lamp in series with the safety ground (third wire) to see if you get any appreciable current there during startup. Make an adapter... DO NOT cut into your power cable to do this.

There looks like theres something wrong with your drive.
The flashing one red light means that there is a hardware fault. I would of done the same testing procedure as you did, unhook parts to see if you can find the culprit. The dvd drive will need replacing as be the case something on the dvd drive's board may have shorted.

This fault may be similar to a Harmon Kardon AVR1550 fault I recently encountered. I did all the usual checks e.g. testing for presence of DC on speaker outputs etc. but all seemed fine, then the fault cleared! Next day it re-appeared and attention was (falsely) given to the protection circuits as the amplifier circuits themselves were considered to be in order. The HK uses both voltage and current protection circuits and it was discovered that the current protection circuit was operating. Eventually the fault was found to be one of the 0.39 Ohm 3W metal oxide resistors that had gone high in value on the left hand channel. Of course your amplifiers fault may not be due to this but the reason for going into standby would probably be the same i.e. due to amplifier protection circuits operating. You need to check out all the output devices and those resistors on every channel, even surround ones you may not be using. Hope this helps.