Trends TA-10 problem

Theli · 20th January 2007, 03:30 PM

I just received a Trends TA-10 amplifier , but there is a problem with it. I hooked up the amp (after I switched it to power amp mode and tightened a speaker post that had come loose)and it started to make a high pitched squealing noise and popping from my speakers. I've tried both modes (integrated and power amp) and both give the same results. Nothing looks wrong in the amp, no obvious burning or poor connections. Also after reading the manual, I noticed the DC voltage section. At this time I only measured, did not adjust the voltage pots. On the right channel speaker binding post I get 2V (2000mV) and on the left I measure around 25mV.

yesterday, I tried hooking up the amp again one channel at a time ( again in both modes). This time I did not get any squealing, but hardly any sound and with a large amount of distortion.

today, I tried once again in Integrated mode. The left channel produced the high pitched whining sound, and the right a popping sound with or without input and regardless of volume level. With input I got some music from the left channel but nothing from the right channel.

Right now I'm just waiting for Trends support to get back to me, but I'm wondering if there is anything I can do to see what's happening, such as measuring components. Kinda annoying to have this little amp in front of me and not working...

thanks for reading.

Mike

Theli · 21st January 2007, 06:06 PM

Anyone have thoughts on what could cause this?

Pano · 21st January 2007, 06:18 PM

Hi Mike,
I wouldn't bother fixing it - just get new one. There is a serious problem there, most likely a fault in the input section. 2V DC on one side is waaaayyy too much.

I like the Trends, but the build quality is not the greatest. They are working on improving it, though.

Sorry you had the trouble, when you get your replacement you will like it, for sure.

EdT · 22nd January 2007, 03:45 AM

If you are curious try to check the bottom side of the PCB for any shorts. Mine had one of the jumper pins shorted with solder and a whole bunch of bad soldering joints that I had to touch up. I don't think Trends does any visual inspection after the wave soldering process. I even had to reseat the two pots to seat properly flat onto the PCB and one of the lead of the LED wasn't even soldered.

Did you get your amp from Sascha in BC ? maybe he can help

Yer, I am in contact with Sasha and David of Trends Audio to improve quality. I am encouraging them to move to an IPC-A-610 Class 2 standard, that would be a first in the audio industry.

doorman · 22nd January 2007, 03:54 AM

If you contact Sasha @ http://www.musical.ca/index.html he'll probably have the tech guys in HK contact you. I had a few questions to which they responded very promptly.
Good Luck, Don

Theli · 22nd January 2007, 03:13 PM

Trends will replace the amp. I did buy from Sasha at Obad Imports. He has been great with the before and after support. Thanks guys!!

Theli · 1st February 2007, 12:41 AM

I received my replacement and all I can say is WOW!! I never thought something so small can work the way it does

If you want to buy from Sasha at Obad, just do it! hehehe. Nothing but good things to say.

Koolthang · 1st February 2007, 07:01 AM

Mike,

I felt real bad when you got a bum unit, because I know how much you anticipated getting it. I'm glad you're rocking it now!

btw, it would be great if you could send a pic of your little amp in your rig for the gallery:

http://www.musical.ca/page/page/4160588.htm

cheers,

sasha
Obad Imports
www.musical.ca

Theli · 1st February 2007, 09:52 PM

sure can do!!!

dzampella · 26th February 2007, 10:09 PM

Wow, you guys sure have me nervous as I am waiting for my Trends amp to arrive in the next two days. Glad to hear that support is good.

20th January 2007, 03:30 PM	#1
Theli diyAudio Member Join Date: Jan 2004 Location: Saskatoon	Trends TA-10 problem I just received a Trends TA-10 amplifier , but there is a problem with it. I hooked up the amp (after I switched it to power amp mode and tightened a speaker post that had come loose)and it started to make a high pitched squealing noise and popping from my speakers. I've tried both modes (integrated and power amp) and both give the same results. Nothing looks wrong in the amp, no obvious burning or poor connections. Also after reading the manual, I noticed the DC voltage section. At this time I only measured, did not adjust the voltage pots. On the right channel speaker binding post I get 2V (2000mV) and on the left I measure around 25mV. yesterday, I tried hooking up the amp again one channel at a time ( again in both modes). This time I did not get any squealing, but hardly any sound and with a large amount of distortion. today, I tried once again in Integrated mode. The left channel produced the high pitched whining sound, and the right a popping sound with or without input and regardless of volume level. With input I got some music from the left channel but nothing from the right channel. Right now I'm just waiting for Trends support to get back to me, but I'm wondering if there is anything I can do to see what's happening, such as measuring components. Kinda annoying to have this little amp in front of me and not working... thanks for reading. Mike

21st January 2007, 06:18 PM	#3
Pano diyAudio Moderator Join Date: Oct 2004 Location: North Carolina Blog Entries: 4	Hi Mike, I wouldn't bother fixing it - just get new one. There is a serious problem there, most likely a fault in the input section. 2V DC on one side is waaaayyy too much. I like the Trends, but the build quality is not the greatest. They are working on improving it, though. Sorry you had the trouble, when you get your replacement you will like it, for sure. __________________ Take the Speaker Voltage Test!

26th February 2007, 10:09 PM	#10
dzampella diyAudio Member Join Date: Feb 2006 Location: upstate NY	Trends TA 10.1 Wow, you guys sure have me nervous as I am waiting for my Trends amp to arrive in the next two days. Glad to hear that support is good. __________________ davez

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21st January 2007, 06:06 PM	#2
Theli diyAudio Member Join Date: Jan 2004 Location: Saskatoon	Anyone have thoughts on what could cause this?

22nd January 2007, 03:45 AM	#4
EdT diyAudio Member Join Date: Dec 2006	If you are curious try to check the bottom side of the PCB for any shorts. Mine had one of the jumper pins shorted with solder and a whole bunch of bad soldering joints that I had to touch up. I don't think Trends does any visual inspection after the wave soldering process. I even had to reseat the two pots to seat properly flat onto the PCB and one of the lead of the LED wasn't even soldered. Did you get your amp from Sascha in BC ? maybe he can help Yer, I am in contact with Sasha and David of Trends Audio to improve quality. I am encouraging them to move to an IPC-A-610 Class 2 standard, that would be a first in the audio industry.

22nd January 2007, 03:54 AM	#5
doorman diyAudio Member Join Date: Jul 2003 Location: Vancouver Isl. B.C.	If you contact Sasha @ http://www.musical.ca/index.html he'll probably have the tech guys in HK contact you. I had a few questions to which they responded very promptly. Good Luck, Don

22nd January 2007, 03:13 PM	#6
Theli diyAudio Member Join Date: Jan 2004 Location: Saskatoon	Trends will replace the amp. I did buy from Sasha at Obad Imports. He has been great with the before and after support. Thanks guys!!

1st February 2007, 12:41 AM	#7
Theli diyAudio Member Join Date: Jan 2004 Location: Saskatoon	I received my replacement and all I can say is WOW!! I never thought something so small can work the way it does If you want to buy from Sasha at Obad, just do it! hehehe. Nothing but good things to say.

1st February 2007, 07:01 AM	#8
Koolthang diyAudio Member Join Date: Dec 2006	Mike, I felt real bad when you got a bum unit, because I know how much you anticipated getting it. I'm glad you're rocking it now! btw, it would be great if you could send a pic of your little amp in your rig for the gallery: http://www.musical.ca/page/page/4160588.htm cheers, sasha Obad Imports www.musical.ca

1st February 2007, 09:52 PM	#9
Theli diyAudio Member Join Date: Jan 2004 Location: Saskatoon	sure can do!!!

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