I have the all tube Crate TV-120. When I turn it on it fires up fine. When I switch the standby on I get a loud whistle sound and can hear a humming from the speakers. I can also get a low guitar volume when I plug in and play. It seems like this came up after using the effects loop one time. The loop seemed to work fine. When I unplugged the amp started freaking out like this. I may have plugged my DG Stomp into the wrong send/return input, but the loop seemed to perform just fine. Thanks for your help.

These blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power LED, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices. http://electronicshelponline.blogspot.com/

sounds like a leak in the air stack or if coming from gas valve need new gas valve

3am is the freeview box update time it will do this every day at 3am the loud click you hear you should not hear it but it may be the update switch that turns the tv out of standby for the freeview to be updated its a different switch that turn this on and may be sticking.

TV Fly back transformer or High voltage Distributor ist defective.contact qualified technician for repair

U have tools like a soldering iron,a roll solders,also can u do basic soldering?Yes.This tv have cold solders joints in the(CRT-Tv tube) video board connections pins socket that connected to the(CRT-Tv tube).The tv loud buzzing sound is comming from the FBT-the flyback transformer,that is a big black block of plastic with a red wire with a cap that hook to the(CRT-Tv tube).Resolders both the FBT and the video board CRT socket holes connections.Will solved these 2 problems.

A possible problem MIGHT be marginal switch contacts on the external foot controller cable. If you are not using the foot pedal, these contacts must maintain contact to keep the same channel selected.

That most probably seems to be a future issue with your color wheel, it's starting to go out, you need to identify which one you have before you purchase one, there are two kinds, one with a gold bearing and another one with a silver bearing

It sounds like the high voltage circuit got damp and arced. This arc caused the horizontal output transistor to short.
You might try replacing the output transistor if you're experienced in this type of repair. If not then you need to take it to a repair shop.
The "whistle " you're hearing is the power supply indicating that it has a short on its load. When the power supply has an over load (short) its frequency drops down when your ear can hear it oscillating. This type of power supply is a switching power supply normally operating a several thousand hz(cycles) which is out of range of human hearing.

Stargazer

If it's between 5-10 secs, that's normal. You will turn the tv on and hear a loud (buzz/hum) that is the picture tube firing up, once it's fired up, it has a few more seconds until your picture comes up fully. That is about 5-10 secs from pushing the power button.

If it's taking longer than that, your picture tube may be going out.

I had a 36XBR250 and it took about 10 secs to fire up and show a picture, and it was 5 1/2 years old.

I think maybe the G-board needs to be replaced. A TV shop will have to repair it. They normally start around $200.00