I have a battleship Pioneer tuner from thirty years ago that has just recently started to go off tune, and also lets its little birdies sing. Any ideas where to start looking? One of these fellows.
Cheers Steve
An externally hosted image should be here but it was not working when we last tested it.
Cheers Steve
Where to start... service manual for starters and whatever you do don't twiddle anything internally 
Something like that could be difficult to fix. I would check the basics such as making sure the rails are clean and correct. If they vary or drift that will affect the tuning and alignment.
If it is a real RF fault then things get tough. It could be anything... a ceramic cap going leaky, old electroylitics etc etc. Tuner faults are rare.
A can of freezer may help, not blasting parts but just dripping a little onto any suspect items.
Something like that could be difficult to fix. I would check the basics such as making sure the rails are clean and correct. If they vary or drift that will affect the tuning and alignment.
If it is a real RF fault then things get tough. It could be anything... a ceramic cap going leaky, old electroylitics etc etc. Tuner faults are rare.
A can of freezer may help, not blasting parts but just dripping a little onto any suspect items.
Probably about time for a recap, electrolytics only.. And as Mooly has indicated twiddle not yee internal coils, and pots!
Anecdotally speaking my Mitsubishi DA-F10 had started to die, replacing all of the electrolytics (a day's work in itself) brought it back to the expected levels of performance.
Anecdotally speaking my Mitsubishi DA-F10 had started to die, replacing all of the electrolytics (a day's work in itself) brought it back to the expected levels of performance.
Thank you Mr kr. I promise I won't mess with the pots and coils, in an effort to solve the wrong problem. I will take your words on board, especially as I did troubleshoot my Leak Troughline 3 tuner (the conceptual opposite to the Pioneer) by replacing a cap. If all fails I shall console myself that with metal prices the way they are, scrap value of this battleship will probably be more than I paid for it!
Cheers Steve
Cheers Steve
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.