Bel 985 No Audio

[joshhemming]

My 985 has worked great for many years. Suddenly, no tones either when starting up or when threats detected. The LEDs display shows the threat but no audible tone.

I pulled the speaker out of the case, unsoldered one wire and ohmed the speaker with 3 different digital ohm meters. It reads 31 to 33 ohms, so I'm assuming the speaker is good. Can a speaker still be bad, even if it reads the correct resistance when measured?

Any other ideas as to what could be killing the audio alerts?

[Radar Roy]

Sounds like the speaker Josh, there was a seller on eBay awhile back that was selling replacements

[gra]

Just solder another speaker no matter what resistance it has to see if this is the problem...then buy a good one...
If i remember correctly resistance was 12 ohms on bel speakers.

[joshhemming]

Just solder another speaker no matter what resistance it has to see if this is the problem...then buy a good one...
If i remember correctly resistance was 12 ohms on bel speakers.

Thanks Radar Roy and gra.

Most of the 1 1/8" speakers on Ebay are rated at 32 ohms. Since mine reads 31-33 (depending on which ohm meter I use), I assume it's good. But anything is possible....may be something else wrong with the speaker besides it being open.

I had to replace the speaker on my other Bel 985 a couple of years ago. It read infinity, which indicated an open speaker. I wish I could remember exactly how many ohms the replacement speaker read. It fixed the problem, in any event. Now that I think about it, this might be the same Bel 985 that I repaired before. I've got 4 of them....hard to keep them straight. Excellent detectors.