Any home audio enthusiasts on here?? help me!!!

[Spiced MSP]

Ok, here is my problem. I have a Techwood 260 watt STR84 reciever. I have looked online everywhere with no success. Before I started having issues and everything worked fine, I would turn on the reciever and you would hear two clicks. The first click is the the recieiver and fan turning on and "Welcome" is displayed. The second click is after everything is turned on. Now, for some reason, if I turn it on, I hear the first click and the fan turns on. After that, "welcome" is displayed as usual but I never hear the second click and then "Protect" is displayed and blinking on the reciever. While is says protect, i can't do anything at all, no matter what I press. I disconnected all speaker wires and components and it still does it. I really like my stereo system. It came with the reciever, 5 disc changer, tape deck(who still uses those..lol) and four 15'' subs in woodgrain enclosure. ( two enclosures with two subs on each). I have broken plenty of pictures and have had many noise complaints from neighbors several houses down but I do not want to have to get rid of my stereo because of something I could fix instead of buying another reciever. Any suggestions?? I have pics attached of the reciever and subs for the curious ones.

 

[Spiced MSP]

(help)

 

[genericuser]

Usually when it says "protect" that's the receiver's auto shutoff feature. It does that so it doesn't blow a speaker. If you have any speaker wires crossed, touching, or hooked up incorrectly (i.e. hooking the + to the - terminal) it'll do that.

Make sure your wires are set up correctly. After that, unplug it for an hour or so, see if that does it. If your receiver has a reset button, hit it.

If none of that works, one of your outputs has bit it, and unless you can fix that, your receiver is cooked.

 

[Bozodeclown]

have you looked for an inline fuse?There may be a cartridge style fuse holder that screws in to the back....or if you are careful,unplug it and remove the covers and look for a fuse on the circuit boards....it's also a good time to look for any burned components (ie. resistors,capacitors,inductors etc.) or burned connections on the pcb....you may be lucky and find a bad solder point...
Good luck

 

[Spiced MSP]

Usually when it says "protect" that's the receiver's auto shutoff feature. It does that so it doesn't blow a speaker. If you have any speaker wires crossed, touching, or hooked up incorrectly (i.e. hooking the + to the - terminal) it'll do that.

Make sure your wires are set up correctly. After that, unplug it for an hour or so, see if that does it. If your receiver has a reset button, hit it.

If none of that works, one of your outputs has bit it, and unless you can fix that, your receiver is cooked.

I have disconnnected all of my speaker wires to eliminate the possibility of crossed wires, touching, or incorrectly hoooked up wires. I also reset it several times with no success. I unplugged it before and it looks like there are two or three small fuses(little glass tube with metal caps on the end) with a metal rod inside of them. They didn't look burnt out or anything. How can I check the outputs? I also checked all over the circuit boards and nothing looked out of the ordinary.

have you looked for an inline fuse?There may be a cartridge style fuse holder that screws in to the back....or if you are careful,unplug it and remove the covers and look for a fuse on the circuit boards....it's also a good time to look for any burned components (ie. resistors,capacitors,inductors etc.) or burned connections on the pcb....you may be lucky and find a bad solder point...
Good luck

I have looked all over the circuit boards and I don't see anything out of the ordinary. There are a couple of fuses in there and they all look fine. I'll check for the solder point and the screw in fuse. Thanks for helping me out with this. I really appreciate it.

 

[Bozodeclown]

I'm sure you have looked but there isn't a reset button on the back because it sounds like you have a thermal overload problem.Also with the fuses you can't always tell one is blown by looking at it you should pull them and check with an ohmmeter.

 

[Spiced MSP]

I'm sure you have looked but there isn't a reset button on the back because it sounds like you have a thermal overload problem.Also with the fuses you can't always tell one is blown by looking at it you should pull them and check with an ohmmeter.

I do have a reset button on the back of the reciever. It didn't fix anything though. I'll check with an ohmmeter. Is a multimeter the same thing? What do you mean by thermal overload? How would I go about checking for that?

 

[Bozodeclown]

a multimeter should have an ohm setting on it....it just sends a small voltage through a circuit/fuse to check for continuity...a thermal overload is a component that gets warm over a period of time and is generally reset either by cooling down or a reset button...when you reset it does it stay popped out?

 

[Spiced MSP]

a multimeter should have an ohm setting on it....it just sends a small voltage through a circuit/fuse to check for continuity...a thermal overload is a component that gets warm over a period of time and is generally reset either by cooling down or a reset button...when you reset it does it stay popped out?

the reset button? is it supposed to stay popped out? The receiver has a built in fan for cooling as well. Here is a pic I just took of the reset button and fan...

the reset button is in the upper left corner

 

[Bozodeclown]

nope the reset button should only pop out when it's tripped and should stay in when reset....I was looking online at your amp and all seem to say that it's an output problem as in post amp (speakers)...but if you have disconnected all the outputs and it still is tripped or in protect mode then you may have blown a component in the amplification circuit aka transistor or.....I'm sorry for not being able to help I'm just trying to give you some troubleshooting that I would do....when my yamaha amp would overheat it would go into a protect mode and would require me to let it cool down before I could reset it,but with yours I'm thinking it's beyond a simple fix aka replace fuse, reset etc.
Blown capacitors you can usually see as they will expand and look like they are bursting.Blown resistors will short circuit and you can usually read across them with the ohmeter (it will show 0) or they will be discolored but transistors are a little more tricky and not really easy to spot.
Good luck man and hope if it can be fixed it's not too expensive cause I know how you feel,sometimes you get used to an amp and a new one just isn't the same.

 

[Spiced MSP]

nope the reset button should only pop out when it's tripped and should stay in when reset....I was looking online at your amp and all seem to say that it's an output problem as in post amp (speakers)...but if you have disconnected all the outputs and it still is tripped or in protect mode then you may have blown a component in the amplification circuit aka transistor or.....I'm sorry for not being able to help I'm just trying to give you some troubleshooting that I would do....when my yamaha amp would overheat it would go into a protect mode and would require me to let it cool down before I could reset it,but with yours I'm thinking it's beyond a simple fix aka replace fuse, reset etc.
Blown capacitors you can usually see as they will expand and look like they are bursting.Blown resistors will short circuit and you can usually read across them with the ohmeter (it will show 0) or they will be discolored but transistors are a little more tricky and not really easy to spot.
Good luck man and hope if it can be fixed it's not too expensive cause I know how you feel,sometimes you get used to an amp and a new one just isn't the same.

hey man, I really appreciate it. If I can't get it fixed, I may just sell it to a shop that can or something. and I'll probably just sell my speakers and put the money towards my car..lol. Thanks again.

 

[Bozodeclown]

no problem man good luck

 

[Mid_Life_Crisis]

Considering the volume you like to play it at, there is a very good chance you damaged an output transistor (the beast of burden of the amp). Depending on the design of the amp, these can be very easy or damn near impossible to take out without screwing up the board. I would research audio forums to find out how to remove them. They can be tested for proper function.
There are other possibilities, but most would not be cost effective to troubleshoot unless you have the good fortune to find a tech who is very familiar with the particular amp.

 

[Spiced MSP]

Considering the volume you like to play it at, there is a very good chance you damaged an output transistor (the beast of burden of the amp). Depending on the design of the amp, these can be very easy or damn near impossible to take out without screwing up the board. I would research audio forums to find out how to remove them. They can be tested for proper function.
There are other possibilities, but most would not be cost effective to troubleshoot unless you have the good fortune to find a tech who is very familiar with the particular amp.

where would the output transistor be in the reciever? or what does one look like? Im not familiar with working on the "brains" of electronics and I don't know of any shops or businesses around here that do repair work on stuff like this. So, I may just end up getting rid of it. I really want to try to fix it before I make up my mind and dump it. By the way, thanks for your advice

 

[Mid_Life_Crisis]

where would the output transistor be in the reciever? or what does one look like? Im not familiar with working on the "brains" of electronics and I don't know of any shops or businesses around here that do repair work on stuff like this. So, I may just end up getting rid of it. I really want to try to fix it before I make up my mind and dump it. By the way, thanks for your advice

Imagine one of those flat straw hats you sometimes see in old movies.
Now cut off the brim on two sides so the brim is kind of oval shaped instead of round. Imagine the remaining brim is drilled out for screws to hold the whole thing down. The leads come out the bottom. In any amplifier worth owning, these things are mounted to a large chunk of metal with fins that is called a heatsink, because it sucks away the excess heat and dissipates it into the air. There is at least one of these per channel, usually more in a high powered setup. Tube amps are a whole nother story, but you don't have one of those, so don't worry about it.
If you still can't find them, google "power transistors".

 

[Bozodeclown]

that's a great description of a transistor I was picturing it and thought....yeah thats what it looks like