masmiffy 82 Posted February 11, 2009 Report Share Posted February 11, 2009 Finally got my MK1 back from a radio 'expert' mate. He recons one of the chips is not working, typical Deben no help and they scratch off the codes!! I tried it last night and it seems to work ok out to about 6', poss more, then gets a non click 'feedback' type noise. so the questions are. 1) How to calibrate? [ie the range at which it locates at present doesnt match the dial numbers] 2) Does anyone have the chip number? 3) What causes the 'non click' past 6' Quote Link to post
solostoke 1 Posted February 11, 2009 Report Share Posted February 11, 2009 i have the same problem, my mk1 only locates down to about 5 foot. mine is just silent if i am any further anyway. so 5 - 6 foot away reads at 15 on mine any help out there?? cant find any info so far on it!! Quote Link to post
Guest ferret feller Posted February 11, 2009 Report Share Posted February 11, 2009 dave mate thats cos your collor is 8" and the locator is 15" Quote Link to post
masmiffy 82 Posted February 11, 2009 Author Report Share Posted February 11, 2009 dave mate thats cos your collor is 8" and the locator is 15" Good point! So for clarification how to tell the difference between 8' collor and 15' collar 8' locator and 15' locator Just wondered as my locator has 8' on the wheel! Quote Link to post
solostoke 1 Posted February 11, 2009 Report Share Posted February 11, 2009 dave mate thats cos your collor is 8" and the locator is 15" Good point! So for clarification how to tell the difference between 8' collor and 15' collar 8' locator and 15' locator Just wondered as my locator has 8' on the wheel! well my locator has 15 on the wheel and as far as i know ( according to the instructions with it) an 8 foot collar has one battery and the 15foot has two batteries. mine has two Quote Link to post
Guest ferret feller Posted February 11, 2009 Report Share Posted February 11, 2009 oooh lamping tonight mate? Quote Link to post
solostoke 1 Posted February 12, 2009 Report Share Posted February 12, 2009 so can anyone help us??? or am i going to have to buy a mk 3 lol??!!!! Quote Link to post
solostoke 1 Posted February 12, 2009 Report Share Posted February 12, 2009 Seasons over now. Start saving for a mk 3 magnetic for september. I have one they are dead on. Dont listen to all the complainers just set in their ways. seasons over?? surely got a few weeks left? been getting them with young all through winter this year though. might just take it apart and have a fiddle lol, sure i will figure it out!!! would be good even if i do get a shiny mk3 to have a back up locator! Quote Link to post
POLLY PERKINS 0 Posted February 12, 2009 Report Share Posted February 12, 2009 I sent my mk1 back to deben to have it re-calibrated...cost me £60. Quote Link to post
maphunter 0 Posted February 12, 2009 Report Share Posted February 12, 2009 when your mk1 makes a feedback noise after a certain depth,apparently its a part called the persimiter,,its the bit that ya wheel screws onto. apparently when you turn the wheel some brushes run around a graphite track and over the years bits of the graphite wear away,so when the brushes go over a worn part it makes a shorting noise......but youve guest it deben say they dont make persimiters for the mk1 anymore Quote Link to post
masmiffy 82 Posted February 13, 2009 Author Report Share Posted February 13, 2009 when your mk1 makes a feedback noise after a certain depth,apparently its a part called the persimiter,,its the bit that ya wheel screws onto. apparently when you turn the wheel some brushes run around a graphite track and over the years bits of the graphite wear away,so when the brushes go over a worn part it makes a shorting noise......but youve guest it deben say they dont make persimiters for the mk1 anymore Great answer thanks. What I cant believe is try as you might, and I have, you cant get any info on the bloody things from Deben If they dont make them anymore what is their problem? Apart from trying to get you to stump up for the new MK3! You would think that they would be proud to see such a well loved bit of kit still being used? Its really basic electronics, I am told, but with part numbers scratched off everything its a dead loss to repair! Deben never made em anyway I think they were made for them 'under licence' if only we could find that person eh? Quote Link to post
chalkedup 14 Posted February 13, 2009 Report Share Posted February 13, 2009 you could possible try some high pressure electrical contact cleaner to clean out the bits of worn off graphite, its the same with most stereo equipment but you want the stuff without the lube, if its that bad you could unsolder it and put it in a small amount of it to soak and give it a good shake out it wont leave any ressidue so you should get a clean track so no feedback Quote Link to post
PETEWINN 5 Posted February 13, 2009 Report Share Posted February 13, 2009 dave mate thats cos your collor is 8" and the locator is 15" Good point! So for clarification how to tell the difference between 8' collor and 15' collar 8' locator and 15' locator Just wondered as my locator has 8' on the wheel! The only difference between the two locators is the sticker. If you are using an 8' locator with a 15' collar then just double the distance shown. If the other way round then half the distance. As someone else said, 8' collars have one battery. 15' have 2. To calibrate you adjust 2 pot resistors with a screwdriver. Its a bit of trial and error to get it right, but definitely not worth paying Deben £50 for. Quote Link to post
solostoke 1 Posted February 13, 2009 Report Share Posted February 13, 2009 right then, im off to the shed to calibrate mine!!! il take some pics doin it and if im successful il upload em Quote Link to post
masmiffy 82 Posted February 13, 2009 Author Report Share Posted February 13, 2009 dave mate thats cos your collor is 8" and the locator is 15" Good point! So for clarification how to tell the difference between 8' collor and 15' collar 8' locator and 15' locator Just wondered as my locator has 8' on the wheel! The only difference between the two locators is the sticker. If you are using an 8' locator with a 15' collar then just double the distance shown. If the other way round then half the distance. As someone else said, 8' collars have one battery. 15' have 2. To calibrate you adjust 2 pot resistors with a screwdriver. Its a bit of trial and error to get it right, but definitely not worth paying Deben £50 for. I had a go at this before I handed my unit over to the radio guy to check out. Didnt have much luck. Have you tried this yourself mate and how did you get on? Quote Link to post
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