March 12, 2020 0 Comments

BD Transistor Datasheet pdf, BD Equivalent. Parameters and Characteristics. BD, BDA, BDB, BDC. PNP SILICON POWER TRANSISTORS. PRODUCT INFORMATION. 1. JUNE – REVISED MARCH Copyright. Silicon PNP Power Transistors. BD/A/B/C. DESCRIPTION. ·With TOC package. ·Complement to type BD/A/B/C. APPLICATIONS. ·For medium power.

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At the time, I also replaced some smaller capacitors where I could reach those. I removed the top cover and discovered one of the sand filled?

BD242 PDF Datasheet浏览和下载

But the next question is why? Joost’s recommendations to use a Variac when testing ‘s is good advice as one can bring the voltage up slowly.

What could have gone wrong? I then replaced the 4A fuse dattasheet kept blowing, connected the to its pre and switched on. I have been unwell for many bc242 with all kinds of flu nasties. All the High-end boards for Quad and are available again as well as the High-end revisio. Hello again gents Apologies for not keeping you up to date about my MK silent left channel. Where else can I look or measure, please? Btw, I don’t think I have blown components. Which of his recommendations are first choice, if any?

I see that EJP has already replied, but there’s a useful list of transistor equivalents if you click the FAQ’s at the top of the page. So you will need to replace there, with MJ I did not have a replacement 4A fuse in stock and replaced the blown item with a similar sand-filled 3A fuse which also blew immediately.


I have a variac and dattasheet recommendation to to adtasheet at R8 is very useful. I also gave the source the alternative 2SA but she says these items are ‘very old’.

Is there perhaps another alternative I can use as replacement for or 2SA? My problem happened to be R8 but my point was that any component failure in the initial stages could manifest itself with further component failure at the outputs.

Check with a multimeter across collector the case and the emitter pin. Even replacing all these caused TR9 and 10 to blow again.

My friend researched some replacement data sheets for me and recommended the following replacements: Eventually the fault was traced to R8 being open circuit thus putting an incorrect voltage on IC1. Apologies for not keeping you up to date about my MK silent left channel. I have to buy some 4A fuses today and will post here re the diagnosis. Well I didn’t mean to imply you did it personally, but it has undoubtedly happened somehow. I’ll have a look and do some measuring. During the past several years, my worked perfectly without any issues at all until about a week ago when I discovered its left channel had no sound.

The only unusual thing is the is more or less permanently switched on with the pre-amp’s volume set so low one can barely hear music is playing. I had a similar problem on a earlier in the year it took a fair amount of time to fix.

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Dead Left channel on my Quad MK1

The same local ZAR source was supposed to get back to me about replacements for the ‘s since the datzsheet October but she never did. Hello Gents I’m new here but I have been a Quad solid state user for many years. The reason being that I now live alone in a big house after the death of my wife in January this year and I leave the system switched on due to previous house robberies here, hoping the system’s sound will deter more break-ins at my house. Some 2N’s and BDC’s arrived today and I worked slowly and carefully, removing the old and replacing them with the new.

Apologies for asking for some assistance in my very first post. An oscilloscope and sine wave generator also really needed to look at waveforms throughout the circuit. Thank you and best regards to all assisting me here.

Silicon PNP Power Transistors

A friend helped me to diagnose the dead channel on my Quad MK1 and the problem was traced to one of the Toshiba 2SD’s. There are no dry joints – I’m an experienced solderer and can replace or repair things I can SEE are faulty but know zero about electronic troubleshooting.

Enter Word Verification in box below. I’m new here but I have been a Quad solid state user for many years.