Home |
Search |
Today's Posts |
|
Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
Reply |
|
LinkBack | Thread Tools | Display Modes |
#1
|
|||
|
|||
Delco Radio
Hi everyone,
I have a delco am fm radio that has a low volume and it wont go up. I ground out the other side of the speaker, not using the negative speaker wire, it works. I know that I am hooking it up right. Can anyone guess what the problem would be internally? Something simple like maybe a resistor bad so the amp transistors not getting biased correctly or something? TIA, Tim |
#2
|
|||
|
|||
Automotive Radio Problems with out a guess at to what year, yet model or
chassis of the product you are playing with? Probably a GM vehicle item? Right since it is a Delco! Many had chassis return for negative side of speakers, others had actual return wires for negative side of speakers. Also some had differing impedance for original speakers rather than just the common 4 or 8 ohm type. Connecting improper impedance speakers or connecting them incorrectly can, and will eventually damage the internally mounted audio output devices. "Tim Armstrong" wrote in message . .. Hi everyone, I have a delco am fm radio that has a low volume and it wont go up. I ground out the other side of the speaker, not using the negative speaker wire, it works. I know that I am hooking it up right. Can anyone guess what the problem would be internally? Something simple like maybe a resistor bad so the amp transistors not getting biased correctly or something? TIA, Tim |
#3
|
|||
|
|||
my GUESS would be that the radio has a bridging type of amplifiers that
drives both speaker leads so as to get more power, and one side of the amp is defective. I assume this is a stereo radio with a left and right speaker. How does the other side work? Mark |
#4
|
|||
|
|||
"Mark" ) writes: my GUESS would be that the radio has a bridging type of amplifiers that drives both speaker leads so as to get more power, and one side of the amp is defective. BUt if that's the case, then putting the speaker from one output line to ground will put a low value resistor across a DC voltage. Not so good for the speaker, and not so good for the amplifier. Put a capacitor between the amp and the speaker, and of course it will be like any single-ended amplifier. Micahel I assume this is a stereo radio with a left and right speaker. How does the other side work? Mark |
#6
|
|||
|
|||
Thanks everyone for your help!! I know have a place to look.
"Mark" wrote in message ups.com... agreed |
Reply |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
Delco Radio Power Pins | Electronics Repair | |||
Chrysler Radio 1996 Dodge Stratus (Chrysler Sirrus?) Pinout question with GMC S15 Truck | Electronics Repair | |||
Broken Radio | Electronics Repair | |||
Delco car radio ... | Electronics Repair |