Pulling knobs off of a reciever - - help!
I am a neophyte when it comes to electronics, but I have decided to
replace a small burned-out incandescent bulb inside the display panel of my old Marantz 25-watt receiver (circa 1980). Easy job. Shouldn't take more than 5 minutes. Remove the front panel from the rest of the case by removing 4 nuts from the front panel. Then pull off the control knobs. The problem is that the control knobs won't budge! I checked carefully, and there are *no* set screws, so that isn't the problem. The knobs are just your run-of the mill metal knobs. The only way to remove the front panel is to first remove the knobs, so that is why I believe the knobs are "removable". I don't want to damage anything inside the enclosure that the knobs are attached to. And frankly, I can live with a half-dark display panel. Before I decide to leave well enough alone, I thought I'd ask if there are any tricks involved in safely removing tightly-attached knobs. Or should I just become more "assertive" in my pulling? TIA pb -- |
Pulling knobs off of a reciever - - help!
(Phillip Bigelow) writes:
I am a neophyte when it comes to electronics, but I have decided to replace a small burned-out incandescent bulb inside the display panel of my old Marantz 25-watt receiver (circa 1980). Easy job. Shouldn't take more than 5 minutes. Remove the front panel from the rest of the case by removing 4 nuts from the front panel. Then pull off the control knobs. The problem is that the control knobs won't budge! I checked carefully, and there are *no* set screws, so that isn't the problem. The knobs are just your run-of the mill metal knobs. The only way to remove the front panel is to first remove the knobs, so that is why I believe the knobs are "removable". I don't want to damage anything inside the enclosure that the knobs are attached to. And frankly, I can live with a half-dark display panel. Before I decide to leave well enough alone, I thought I'd ask if there are any tricks involved in safely removing tightly-attached knobs. Or should I just become more "assertive" in my pulling? If there are no set screws, they should just pull off but may be quite tight after 23 years. I assume one is on the tuning knob. Since that is a just a bushing, you probably can't hurt anything with resaonable force. Try that one first. --- sam | Sci.Electronics.Repair FAQ Home Page: http://www.repairfaq.org/ Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/ +Lasers | Sam's Laser FAQ: http://www.repairfaq.org/sam/lasersam.htm | Mirror Site Info: http://www.repairfaq.org/REPAIR/F_mirror.html Important: The email address in this message header may no longer work. To contact me, please use the Feedback Form at repairfaq.org. Thanks. |
Pulling knobs off of a reciever - - help!
I am a neophyte when it comes to electronics, but I have decided to
replace a small burned-out incandescent bulb inside the display panel of my old Marantz 25-watt receiver (circa 1980). Easy job. Shouldn't take more than 5 minutes. Remove the front panel from the rest of the case by removing 4 nuts from the front panel. Then pull off the control knobs. The problem is that the control knobs won't budge! I checked carefully, and there are *no* set screws, so that isn't the problem. The knobs are just your run-of the mill metal knobs. The only way to remove the front panel is to first remove the knobs, so that is why I believe the knobs are "removable". I don't want to damage anything inside the enclosure that the knobs are attached to. And frankly, I can live with a half-dark display panel. Before I decide to leave well enough alone, I thought I'd ask if there are any tricks involved in safely removing tightly-attached knobs. Or should I just become more "assertive" in my pulling? TIA Hi, Are the knobs totally plain? If they have caps then lever those off and you will find a nut under the cap. Regards Jeff |
Pulling knobs off of a reciever - - help!
If not succesful with the previous post...once you have tken out the four
screws holding the front panel, use a mallet or wooden hammer and try hitting the panel as close to the knobs as possible...they should pop-up with a few strokes. Alphie |
Pulling knobs off of a reciever - - help!
"Angulos" wrote in message ... If not succesful with the previous post...once you have tken out the four screws holding the front panel, use a mallet or wooden hammer and try hitting the panel as close to the knobs as possible...they should pop-up with a few strokes. Alphie Can you also get a squirt of CRC onto the hubs of the knobs ? that can help sometimes, don't let it run into the pots etc. -- Regards ............... Rheilly Phoull |
Pulling knobs off of a reciever - - help!
(Angulos) wrote:
If not succesful with the previous post...once you have tken out the four screws holding the front panel, use a mallet or wooden hammer and try hitting the panel as close to the knobs as possible...they should pop-up with a few strokes. Alphie I usually pop the knobs out using a dentist tweezers as a small crowbar. Actually, I use an old pair of dentist tweezers with the tips broken, for better leverage. Ing. Remberto Gomez-Meda http://ingemeda.tripod.com/ INGE - Ingenieria Electronica. Puerto Vallarta, Jalisco, Mexico. |
Pulling knobs off of a reciever - - help!
El Meda writes:
(Angulos) wrote: If not succesful with the previous post...once you have tken out the four screws holding the front panel, use a mallet or wooden hammer and try hitting the panel as close to the knobs as possible...they should pop-up with a few strokes. Yes, there is some justification for the existence of dentists. :) They have the greatest precision tools and the strongest adhesives! My apologies to those in the field.... --- sam | Sci.Electronics.Repair FAQ Home Page: http://www.repairfaq.org/ Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/ +Lasers | Sam's Laser FAQ: http://www.repairfaq.org/sam/lasersam.htm | Mirror Site Info: http://www.repairfaq.org/REPAIR/F_mirror.html Important: The email address in this message header may no longer work. To contact me, please use the Feedback Form at repairfaq.org. Thanks. |
Pulling knobs off of a reciever - - help!
Some knobs used a special spring loaded locking device as part of the bushing.
You must reach behind it with a small screw driver and push the lock outward (towards the front of the knob) and pull at the same time. (Phillip Bigelow) wrote in message . com... I am a neophyte when it comes to electronics, but I have decided to replace a small burned-out incandescent bulb inside the display panel of my old Marantz 25-watt receiver (circa 1980). Easy job. Shouldn't take more than 5 minutes. Remove the front panel from the rest of the case by removing 4 nuts from the front panel. Then pull off the control knobs. The problem is that the control knobs won't budge! I checked carefully, and there are *no* set screws, so that isn't the problem. The knobs are just your run-of the mill metal knobs. The only way to remove the front panel is to first remove the knobs, so that is why I believe the knobs are "removable". I don't want to damage anything inside the enclosure that the knobs are attached to. And frankly, I can live with a half-dark display panel. Before I decide to leave well enough alone, I thought I'd ask if there are any tricks involved in safely removing tightly-attached knobs. Or should I just become more "assertive" in my pulling? TIA pb -- |
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