Re: PK5501 LCD Some Keys Don't Work

[Jim <alarminex@xxxxxxx>]

On Friday, December 7, 2012 11:49:26 PM UTC-5, tourman wrote:
> On Wednesday, October 10, 2012 12:36:42 PM UTC-4, Bob La Londe wrote: > O=
n Oct 10, 9:33=A0am, Jim <alarmi...@xxxxxxx> wrote: > > > On Tuesday, Octob=
er 9, 2012 2:00:20 AM UTC-4, Frank Kurz wrote: > > > > On 07/10/2012 8:25 P=
M, Jim wrote: > On Friday, October 5, 2012 8:44:28 PM UTC-4, Bob La Londe w=
rote: >> "Jim" <alarmi...@xxxxxxx> wrote in messagenews:ef5b0e3a-9a06-42a5-=
b0bd-de8ac9c067fa@xxxxxxxxxxxxxxxxxxx > On Thursday, October 4, 2012 7:59:4=
8 PM UTC-4, Bob La Londe wrote: >> PK5501 LCD Some Keys Don't Work I had a =
service call to move a keypad >> today because the customer is removing the=
 wall where it was previously >> mounted. After the move keys 369# (and the=
 various special function keys) >> no longer work. Keys 124578*0 still work=
 fine and user codes using those >> keys (fortunately they had some program=
med) still arm and disarm. I >> didn't drop or abuse the keypad in anyway d=
uring the move. It seemed like >> an easy service call. Any suggestions? I =
did already order a replacement >> keypad. > > Had they already begun const=
ruction? Maybe dust inside? Did you > disassemble and look at the lands on =
the PC board? Is there a ribbon > connector that may have come loose? I don=
't know the configuration/layout > of the keypad but it looks possible that=
 3,6,9 and # are all in a v erticle > row. That would indicate (to me, anyw=
ay) either a loose/bad connection > either on the PC board or wires in the =
keypad or something to do with the > processors matrix. If you have an eye =
loup or good magnifier, look at the > solder connections on the PC board. I=
n removing the Keypad, you may have > flexed the PC Board and broken a comp=
onent or lead solder connection. It > depends on how crazy you want to get =
with it but, you could touch each of > the solder connections with a (not t=
oo hot ) iron. > Nah! Only I'm that crazy. I did take it apart and give it =
the eyeball, but I didn't go get my reading glasses out of the truck. Never=
 carried a loupe in the truck, but I do have a couple in the shop. Maybe it=
s time to start. > > At times I think I could use a pair of glasses with tw=
o 20X eye loupes glued onto the lens of the glasses. > > I think it must be=
 the air polution that prevents me from seeing as good as I used to. > > > =
> > > > Naw. It's the sea air. Too much salt in your eyes. :-) > > > > > > =
I didn't think of that excuse. > > > > > > How kind of you. > > > > Swapped=
 the keypad, works perfectly including some codes that didn't > > work befo=
re... interesting. RHC: Occasionally I find DSC panels and keypads can do V=
ERY strange things. Today I was working with a 5501 keypad on a DSC panel a=
nd suddenly all the zones didn't work any more, while they were working jus=
t fine before I messed with the keypad. Well to make a long story short, "s=
omehow" messing with the panel turned "off" all the zones 1 through 8 in Se=
ction 202, disabling all zones. There is absolutely NO logical way this sho=
uld have happened but it did since I up until that point hadn't entered ins=
taller programming mode... WTF! And of course there is the other rule to re=
member with DSC panels..if something isn't happening the way it should, or =
there's a trouble that just wont go away, power the panel down and back up.=
 Chances are it may solve that inexplicable problem...WTF

I "hate" when crap like that happens. I think ..... if something like that =
can happen to me ..... what the hell is the customer going to think when it=
 happens to them?