Hitachi sr 903 right channel is out and other big issues..

Comments · 27

• MI

  @MichaelYates · 7 months ago

  Very educational , love watching these videos. Well done Joe

• PO

  @Podkast-q6h · 1 year ago

  Thank you for taking the time to show us the troubleshooting procedure. Thats very educational.   Great job, loved it.

• CR

  @craigm.9070 · 1 year ago

  Thank you for your time!  Quite the adventure on this Hitachi, it's ready to play on now.

  1

• JB

  @jb678901 · 10 months ago

  Hi Joe, Joe here. &nbsp;Big Hitachi fan...have more than a few: 2xSR903, 1xSR804, 1xSR703, 1x503L. &nbsp;One SR-903 (physically mint) sits in the family room...love it. &nbsp;After doing the basic inspection, dim bulb, and checking DC offsets, I upgraded to LED&apos;s and did some basic hobbyist maintenance...cleaned the controls, replaced some known problem transistors and a few caps here and there that tested OOS in circuit. Adj. the bias to spec then wrapped it with a nice vinyl wood grain, as the OEM black matte finish was rather dull to my eyes. The face plate is mint...sounds and looks terrific. &nbsp;For $150 plus some parts...it&apos;s a power house.<br><br>The SR804 already came revised (incl. LED&apos;s) but the OEM black matte vinyl had shrunk and pulled away from the vents, making it unsightly. Paid a whopping ~$60 for the unit on a local auction. &nbsp;After the dim bulb and checking of DC offsets...the unit only required a heat gun to remove the OEM wrap and replace with a high quality drift wood grain vinyl. &nbsp;That one now sits at the vacation apartment...paired to some nice Mordaunt Short speakers that I picked up for a song.<br><br>Lastly, the SR-503L, which is perfect for the home office. &nbsp;Also came revised, though I did need to clean the controls again. Also wrapped it...but again...I typically do this for both customized looks and to protect its pristine veneer. &nbsp;Using that one daily. &nbsp;Best part...it had been professionally revised and I was the only local bidder ($140).

• TR

  @tremudy · 8 months ago

  As a complete amature l found this very helpful thanks

• DO

  @douglashoff95 · 1 year ago

  The one thing we always used was making comparison readings between the good channel and the bad one. Especially helpful if you lack a schematic or service manual.

• AF

  @afzaalkhan.m · 11 months ago

  Great &nbsp;diagnostic and repair .very &nbsp;Informative .<br>Thank you.<br>Mak Pakistan

• FL

  @FloppyDos · 1 year ago

  Great repair Joe!<br>Nice glasses btw

• LE

  @lechiffre2617 · 1 year ago

  liked the bad hair day - thx for the video

• MA

  @malybboy · 1 year ago

  I have the same receiver and it&apos;s my favourite one ! Never caused any troubles and it&apos;s been in use almost everyday. Such a nice piece of kit !

  1

• TE

  @terrym1065 · 1 year ago

  Nice fix Joe👍 Finding the transistor on the left channel was a surprise eh... &nbsp;Chain reaction with the diodes on the right channel it seems..and no bad caps...wow. &nbsp;That mess on the right side driver bracket would have had me wondering.. &nbsp;Thanks for the video and work.

• BO

  @bobisyouruncle1 · 1 year ago

  Great analysis and video. Great job.