New TK2050 board

Status
Not open for further replies.
Jump to Latest
#1,221
bdbender said:
Not to be rude, but you need to do your homework.

Search and find discussion in this thread about how trying one SMPS for both T3 channels results in audible noise, and how some models of Meanwell run their fans constantly and some don't.

You also apparently need to learn about linear power supplies from other places in DIY audio. Just for starts, a 30V transformer will give something like 42v dc after rectification, and besides what capacity you need to know how to put together the right combination of rectifier, capacitors, fuse, and inrush current limiting. Whaleman also gave a hint in the post after yours about the T1 supply he built, but you need to be sure you know enough about power supplies to understand what he is saying, for instance about +0- vs. +0.
Click to expand...

SnowBarS, I went back and looked at my post and it IS rude, apologies for that. I assumed your level of knowledge based on nothing whatever. I wanted to delete or edit it but can't find the edit button. My bad!
 
#1,222
Sir i have a tk2050 bought 1 mth ago and now its not working anymore. There are red and green light showing up but one of my speaker channel is not working. I checked the boards, there are no burn marks at all. So how now? I measure 27vdc at the power input and change my speakers. despite that my left channel of my amp is not powering anything
 
#1,223
jtjy said:
Sir i have a tk2050 bought 1 mth ago and now its not working anymore. There are red and green light showing up but one of my speaker channel is not working. I checked the boards, there are no burn marks at all. So how now? I measure 27vdc at the power input and change my speakers. despite that my left channel of my amp is not powering anything
Click to expand...
Hi, which board are you using? T1/T2?
I think you can check the wire connecting first, both inputs' and outputs' should be considered. And switching the left/right wire and try again would be a good way to focus the problem. Then check the relay on board if it's ok(check that is really turn on) if wires are all ok. And tell me again if you still have problem.🙂
 
#1,224
hifimediy said:
Hi, which board are you using? T1/T2?
I think you can check the wire connecting first, both inputs' and outputs' should be considered. And switching the left/right wire and try again would be a good way to focus the problem. Then check the relay on board if it's ok(check that is really turn on) if wires are all ok. And tell me again if you still have problem.🙂
Click to expand...

t2. hi i have check all the wires connecting. I have even swap speakers to test my left channel. My right channel powers my 2 speakers ( i test it 1 by 1) whereas my left could not power anything. how to check if relay on board are really turn on? Also werid, there are no burn marks as well. I do have the red and green LED light up though
 
#1,225
jtjy said:
t2. hi i have check all the wires connecting. I have even swap speakers to test my left channel. My right channel powers my 2 speakers ( i test it 1 by 1) whereas my left could not power anything. how to check if relay on board are really turn on? Also werid, there are no burn marks as well.
Click to expand...

If you have a multi_meter, it will help. When the relay turn on, you can have almost same DC voltage from OUT+ and OUT- to GND. The relay is on the OUT+ rail. And the DC voltage always equal to around 1/2 VCC(power supply).
 
Last edited:
#1,235
The red wire shows:
space.php
 
Status
Not open for further replies.
Top Bottom