NOS DS-501 Delco output transistors for sale....this might fix your radio....

Discussion in 'Parts for sale' started by Topcat, Nov 9, 2018.

  1. Topcat

    Topcat Got TORQUE?

    I started out at Delco Electronics as a radio repairman in '77......if you have a radio that has a good 10 ohm speaker and you can faintly hear the station when it is turned all the way up.....it probably has a blown DS-501.
    These are easy to replace but you need to know what you are doing......
    I have less than 10.....$30.00 each shipped in the lower 48 states.
    Pictures tomorrow.

    Peace WildBill
     
  2. Topcat

    Topcat Got TORQUE?

    These are for early 60's to mid 70's Buick and GM radios....

    Peace WildBill
     
  3. gsx455-4ever

    gsx455-4ever Gold Level Contributor

    Bill . I'll take a chance at one . Let me know how you want payment
     
  4. Topcat

    Topcat Got TORQUE?

    PM on the way.

    Peace WildBill
     
  5. Topcat

    Topcat Got TORQUE?

    Still have some of these.......e-bay after Christmas.

    Peace WildBill
     
  6. Charles Imbergamo

    Charles Imbergamo New Member

    I'm in need of one myself
     
  7. Topcat

    Topcat Got TORQUE?

    Charles.....i will PM you with details on getting one.

    Thanks and Peace WildBill
     
    Charles Imbergamo likes this.
  8. Charles Imbergamo

    Charles Imbergamo New Member

    Sounds good
     
  9. Topcat

    Topcat Got TORQUE?

    Charles....sorry...i will PM you right now.

    Peace WildBill
     
  10. sbrmd

    sbrmd Well-Known Member

    How about when the radio is too quiet at full volume, then unpredictablyou pops into appropriate full volume later? Same prob?
     
  11. Topcat

    Topcat Got TORQUE?

    What year radio?

    Peace WildBill
     
  12. Electra man

    Electra man Older and Slower

    WildBill maybe you can help me with this. I have a 67 am-fm multiplex in an Electra convertible. It works fine up to 1/4 volume but any higher and it crackels and cuts out on the right side and drops to about half volume on left side. I think there's a chance the separate amplifier unit may have been wet at some point. Thanks for any help, Bill
     
  13. sbrmd

    sbrmd Well-Known Member

    WildBill, it's an original Delco am radio in a '68 GTO, built early in the run (prob. August).
     
  14. Topcat

    Topcat Got TORQUE?

    Hard to diagnose without the radio powered up on a bench and an oscilloscope handy.
    More than likely you have some electrolytic caps in the audio output that have dried out and are causing the problems you describe.
    Very common problem for electronics of that vintage......there are re-capping services for old stereos and radios but they are not cheap.

    Peace WildBill
     
  15. Topcat

    Topcat Got TORQUE?

    That one sounds like the volume control .....can you then turn it down properly after it pops to full volume? Could also be a cold or oxidized solder joint on the control.

    Peace WildBill
     
  16. Electra man

    Electra man Older and Slower

    Thanks for the help Bill. I have a lot of experience working on electronics but not radios and I don't have a oscilloscope. I feel that I possess the ability to recap this radio but not do any of the alignment adjustments. I do have the 1967 repair manual for it from Howard Sam's which also has a full parts list including all the electrolytic capacitors. Would you have a source you recommend for buying these parts?
     
  17. Topcat

    Topcat Got TORQUE?

    I have a friend locally that was a radio repairman also.....he does repairs on old stereo's and such....works at Ted Webber's famous loudspeakers as a audio amplifier technician.I will pay him a visit tomorrow and find out where he sources his parts.

    Peace WildBill
     
  18. Electra man

    Electra man Older and Slower

    Thank you.
     
  19. Topcat

    Topcat Got TORQUE?

    My friend gets his parts from Parts Express out of Ohio and MOUSER electronic parts.

    Peace WildBill
     
  20. Electra man

    Electra man Older and Slower

    Thanks again Bill.
     

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