Feb 27, 2012 · I'm working on a Sansui 9090 and need to replace diodes 10D1 on board F2547 which is the protector circuit board. Can I get some help for a similar diode replacement that will work. I looked at some help sites that had similar issues.

Mar 27, 2024 · The Zener diodes are only 1/2 watt. They get replaced with 1N5252B 24v 1/2 watt. I use 1/2watt metal film resistors at 1% tolerance. Transistors T01/T02/T03/T04 need to be KSC1845FTA or equivalent.

Sep 17, 2019 · Replace the two VD1212 diodes (the little "ball" shaped ones). They are a double-diode so use two 1N4148 diodes in series for each one. Do some more searching and you'll more than likely fond a list of what caps to use.

Jun 11, 2018 · The Sansui 9090 was released from 1975 to 1977 as a larger 8080 variant and remains an extremely popular Sansui today. Excellent rated performance and integration of the early BA312 made it a step above move available at the time and standard Sansui features such as the triple tone controls.

Nov 12, 2012 · The diode VD1212 in the constant current sink is an odd one. I suspect it will be two or three diodes in series in the one package. Thats something to check, that the current sink is working and the voltage across R37 is constant.

Sep 9, 2017 · The Sansui 9090, 990 and DB version are all very similar designs with a few differences to note, the 9090 is rated at a nominal 110W vs the 9090DB @ 125W @ 1%THDN. The 9090DB also incorporates the Dolby staging as well as different MIC amp, and driver topology and output compliments.

Jun 5, 2023 · The Sansui 9090 has a quasi-complementary power stage with eight original Sanken 2SC1116 NPN transistors. It delivers 110 watts per channel into 8 ohms with no more than 0.2% total harmonic distortion.

Jan 28, 2025 · Sansui 9090 -----> LINK. To ensure a proper restoration, it is imperative to replace all electrolytic capacitors on every board. It's akin to replacing one tire on a car while keeping the rest worn-out.

8080DB/9090DB Rytv7iM S9O0DB/990DB This service manual is designed for service engineers to repair, adjust, maintain and order the replacement parts of the 8080DB/9090DB, 890DB/

Nov 2, 2016 · Today were are showcasing two Sansui 9090 receivers. The 9090 is the little brother to the 9090db series abd larger brother with 110W output compared to the 8080 Sansui we featured a few months ago on a restoration.