WM8741 Weilang DAC 7 repair or buy ES9038Q2M?

Hi.I bought Weilang Dac7 and i bought R core transformer put them all it in enclosure and was listening for about 10 years and was happy with it.But sound on left channel sound disseppears after 10 seconds of listening. (some oscillation happened when i was connecting optical input to my samsung tv or amplifier input/amplifiers and i think problem is happened because of this,the oscillating sound was too much to the speakers too but speakers and amplifiers are ok )
My friend told he wants this product but he is not good at electronics. I also think to buy it .
https://tr.aliexpress.com/item/1005...84d805c4ba1b4cddf0ec05ee788&afSmartRedirect=y

Do you think it will sound much better than my dac? My dac has good regulation but it is now broken.Should i also buy this dual ES9038Q2M or repair may Weiland DAC 7? (i do not know which part i should repair?)
Any opinions? Thanks and regards
 
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Don’t throw it away, get something else to use, then take your time repairing it.

I have a similar one from the same maker, has be going about the same time, is in a semi permanent installation and has been reliable. It works so well, I picked up a spare board to have in the event something goes wrong.

You’ll need to try and track the signal back to where it goes awry, using a scope, or maybe just a meter.
 
Hi.I bought Weilang Dac7 and i bought R core transformer put them all it in enclosure and was listening for about 10 years and was happy with it.But sound on left channel sound disseppears after 10 seconds of listening. (some oscillation happened when i was connecting optical input to my samsung tv or amplifier input/amplifiers and i think problem is happened because of this,the oscillating sound was too much to the speakers too but speakers and amplifiers are ok )
My friend told he wants this product but he is not good at electronics. I also think to buy it .
https://tr.aliexpress.com/item/1005...84d805c4ba1b4cddf0ec05ee788&afSmartRedirect=y

Do you think it will sound much better than my dac? My dac has good regulation but it is now broken.Should i also buy this dual ES9038Q2M or repair may Weiland DAC 7? (i do not know which part i should repair?)
Any opinions? Thanks and regards
Hi Umut.
I have the same DAC for 10 years now and I love it. I think you should fix it.
Does the problem appear only when you use the optical input?