bloody door bell

[lewlec]

hi every one

new build we done about 6 months ago, had a call to say that the door bell does ding but doesnt dong.... called in today, the chime is 8 - 16v got a 8v tranny which actually gives 10.5v. when push button is pressed the voltage drops to 7.9v but the ding just doesnt sound right. checked continuity on switch wire and had a reading of 2ohms which i think sounds ok, also by passed push button and still the same,also tried changing the chime. maybe i need a higher voltage tranny? just wondering if anyone has had any problems like this?

ragards
gary

 

[alarm man]

must be dong drop,due to low votage,have you done your cals,ding divided by voltage =dong

 

[DurhamSparky]

lol...!!! mint never imagined i would see a post saying i can get a ding but no dong!!

 

[alarm man]

lol...!!! mint never imagined i would see a post saying i can get a ding but no dong!!

i hope the customer isnt expecting 'merrily on high' after the dong

 

[davelerave]

got a roll of high-impedance bell wire once-had fun with that

that was 7.9 at the trafo when the push is pressed?

i would look at the trafo probably if the bell run checks out ok

 

[lewlec]

got a roll of high-impedance bell wire once-had fun with that

that was 7.9 at the trafo when the push is pressed?

i would look at the trafo probably if the bell run checks out ok

hi
no 7.9v at the chime

regards
gary

 

[alarm man]

i take its the solenoid one,have a look at this link press it once it dings,could be a sticking button,or a bar/spring fault,might be worth just to replace it

HowStuffWorks "How Doorbells Work"

 

[lewlec]

hi alarm man

tried changing it but just the same

regards
gary

 

[alarm man]

hi alarm man

tried changing it but just the same

regards
gary

did you change everything except the tranny,? like you say could be a faulty tranny

 

[pushrod]

I would reckon reckon spring tension and lubrication are the problems, especially if it once worked. Check for ladybirds and dead spiders

 

[AIM]

I had one recently where they had ding - dong for the front door and dong only for the back door [no pun intended!!!]

On completion of the PIR I got the ding - dong and the dong only mixed up [ding - dong at the back and dong only at the front. Took a while to sort it out.

An hour later they told me the door bells were battery powered and not from a mains transformer - thanks!