Friday, August 1, 2025

DIY PCB for dual mount TDA1541 (***Part-2***)

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Finally completed the soldering for the dual TDA1541 PCB which required some planning as the solder holes for the 0.1uF capacitors near the ...
Tuesday, July 1, 2025

DIY - Solving Quad 33 one channel no sound

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After fixing the "broken" balance control on Quad 33 #2, I then discovered there were a few things not right on this Quad 33.  Mos...
Sunday, June 1, 2025

FYI Quad 303 owners - Check the condition of your driver board capacitor(s) (***Updated***)

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 Hi everyone, Please do check the condition of the electrolytic caps on the Quad 303 driver boards every once in a blue moon, especially the...
1 comment:
Thursday, May 8, 2025

DIY Hack for broken Quad 33 Balance control "U"hook

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Took my 2nd Quad 33 (refreshed Electrolytic Capacitors only ) from storage only to discover the balance control does not work.  After doing ...
Wednesday, April 9, 2025

Quad 5-pin DIN connector pinout

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From internet   Recently dug-out my Quad 33 for a run, only to discover one of the 5-pin connectors did not work properly - only RHS had aud...
1 comment:
Tuesday, October 11, 2022

DIY PCB for dual mount TDA1541 (***Part-1***)

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Could not resist getting this DIY PCB to attempt simplifying twin mounting the TDA1541/A since there has been quite a few notes of it being ...

Kenwood KT-5020 (***Follow-up***)

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Was window shopping in town when I stumble upon this little gem. Kenwood KT-5020 FMTUNERINFO rates the KT-5020 as a top-10 contende...
1 comment:
Saturday, September 10, 2022

DIY CDM-9 tray gear replacement

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Was helping a friend replace the aging CD player tray gear on his Arcam Alpha 5 CD player ... did not expect I would need to dissamble the e...
Monday, August 22, 2022

REVISIT#2 - DIY TDA1541A DAC

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Recently retrieved the unit (REF:  http://myoldvintagehifi.blogspot.com/2018/04/revisit-diy-tda1541a-dac-with-usb.html ) from storage for a ...
1 comment:
Thursday, July 1, 2021

TIP - Effective USB powered FM signal amplifier

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Had previously bought the following USB powered FM signal amplifier, as part of a antenna kit, to overcome the loss of access to the buildin...

Blue-tooth receiver with audio player and ESS DAC

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Just received my new Trasam DAC2PRO earlier this week.  Trasam DAC2PRO (silver) directly connected to the Sansui B-2101 amplifier The DAC2PR...
2 comments:
Tuesday, May 18, 2021

Changing OP-Amp(s) on the DIY TDA1541A DAC (***Update***)

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Since spending more time online nowadays (due to COVID resurgent worldwide), I chance upon some good deals for better OP-Amp(s) from oversea...
2 comments:
Saturday, October 3, 2020

Proof-of-Concept (POC) of another alternate CD transport (***Update***)

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Old Sharp VCR with TOSLINK for audio output   I obtained the old Sharp DV-NC80 from a neighbour who converted to using a cable video streami...
1 comment:
Saturday, August 1, 2020

Pioneer F-223

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I recently acquired a Pioneer F-223 digital tuner from a friend. Front view of Pioneer F-223 with main portion of test cable for antenna...
4 comments:
Wednesday, July 1, 2020

Follow-up of DIY LS 3/5a (*** Update-1***)

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As Singapore was in "Circuit Breaker" mode (aka govt movement restriction due to COVID-19), I had more time on hands (don't ...