Crispy
very active
Madrigal music is playing - Voices can faintly be heard, "Please leave this patient undisturbed."
Posts: 776
|
Post by Crispy on Jun 16, 2017 20:16:22 GMT
|
|
Rabbit
Administrator
Posts: 7,087
|
Post by Rabbit on Jun 16, 2017 20:23:48 GMT
Some people use a graphite lubricant, but maybe you'd need an eraser in case of mistakes?
|
|
solderdude
Administrator
measureutternutter
Posts: 4,882
|
Post by solderdude on Jun 17, 2017 7:37:26 GMT
The question here is WHAT excatly is squeeking. Perhaps it is not the cup against the headband's 'tube'. Mine is 'free' to move over quite a distance.
I haven't looked 'inside' that part. Simply because I could not figure out how to get 'in' there. Seems like that section is glued or snapped and thus abandonned the idea of how to get inside the tilting mechanism inside the cups.
I suspect that the squeeky sounds may be coming from a ball and socket or other mechanism inside the cup (which is shielded internally in the cup it seems) that is doing the squeeky things. Plastic on plastic is bound to squeek after a while.
Lubrication seems like the answer BUT in this case it is unclear to me HOW to get inside. Probably would have to pry things open. Graphite or some (silicone or oil based) grease seems to be a logical choice but requires applying it to the squeeky parts directly. The silicone sprays or WD40 may be too oily and either not work very long and would require quite an amount. Dripping could be the result + I have no idea whether or not this would drip inside on the driver itself. This may be a bit risky and results may not last.
I may have to open one of mine up and see if and how that part can be reached. Quite sure other uptowns will be affected over the years as well. Would be a shame to write off or not use this headphone because of a mechanical issue.
|
|
Crispy
very active
Madrigal music is playing - Voices can faintly be heard, "Please leave this patient undisturbed."
Posts: 776
|
Post by Crispy on Jun 20, 2017 20:05:39 GMT
The question here is WHAT excatly is squeeking. Perhaps it is not the cup against the headband's 'tube'. Mine is 'free' to move over quite a distance. Definitely not the cup against the headband and the cups move freely over quite a distance same as yours. Definitely not the headband as well. I haven't looked 'inside' that part. Simply because I could not figure out how to get 'in' there. Seems like that section is glued or snapped and thus abandonned the idea of how to get inside the tilting mechanism inside the cups. I suspect that the squeeky sounds may be coming from a ball and socket or other mechanism inside the cup (which is shielded internally in the cup it seems) that is doing the squeeky things. Plastic on plastic is bound to squeek after a while. With this in mind I thought it may be best to try a squirt of silicone spray just to see if it would make things quieter? Well after a good squirt - guess what, it made the creaking even worse so silicone spray is not the answer. Would be a shame to write off or not use this headphone because of a mechanical issue. As it stands now they are definitely not going to be used, which is a shame as I did use them a lot. I searched the internet to see if there was a service manual or something that showed the breakdown of any parts, but could not find anything. One thing I did notice though is they are called Philips 5905 Citiscape and not 9505 Cityscape probably a slight mistype when tired It seems the only solution is to take apart the mechanism and grease the ball and socket if like you say "if anybody knows how to get in there"
|
|
solderdude
Administrator
measureutternutter
Posts: 4,882
|
Post by solderdude on Sept 16, 2017 7:05:51 GMT
Well I finally had some time to toy around with these. What I found was not encouraging. It looks like this headphone is all 'clicked' together with the intention of not being serviceable. Well ... that's what I suspect. I did not dare to force it open a bit afraid I would crack some parts rendering the one I have useless. Mine don't creak (yet) but when I press the cups down hard I can feel plastic rubbing on plastic and figure that can start to creak after a while. To lubricate that part the headphone needs to be opened up. For opening up a modified one it may be best to read the modifying tutorial from back to front. Once the pads are removed the 4 screws need to be removed. When the driver is moved aside (don't tear off the wires so be carefull) you can see a round piece of transparant plastic in the middle. Pry it off (easy to do and re-attaches easily again afterwards. Wiggle the cup around and look into these holes to see where the cup swivels on. Squirt/apply a small amount of (silicone) lubricant exactly on the spot where the hinge is and listen if the creaking reduces/disappears. Time to put the round transparant plastic back in place and reseat the driver and tighten the screws. For a modified version with SRH940 pads follow the instructions in the manual.
|
|
Rabbit
Administrator
Posts: 7,087
|
Post by Rabbit on Sept 16, 2017 8:03:23 GMT
These headphones remain in my arsenal because they're such a great listen.
I'm revisiting them this morning after reading this and the depth of the bass is just profound. No harshness and extremely comfortable. Just shows how we move mostly in 'sideways' steps with headphones very often and forget the older ones which are really, very good.
These are such a pleasurable listen and really need more head time from me!
Trouble is I only have one head and dozens of headphones ....
|
|
Crispy
very active
Madrigal music is playing - Voices can faintly be heard, "Please leave this patient undisturbed."
Posts: 776
|
Post by Crispy on Sept 16, 2017 18:21:39 GMT
These headphones remain in my arsenal because they're such a great listen. I'm revisiting them this morning after reading this and the depth of the bass is just profound. No harshness and extremely comfortable. Just shows how we move mostly in 'sideways' steps with headphones very often and forget the older ones which are really, very good. These are such a pleasurable listen and really need more head time from me! Trouble is I only have one head and dozens of headphones .... I agree Ian, they are a great listen through the kameleon, and very comfortable to wear for long periods, although I still keep picking up my DT770's as I find they are even more comfortable and for a closed headphone sound really open. Only recently has the Philips had less head time because of the creaking in the cups, but I have just seen Frans solution so I will give that a try when I get some time.
|
|
Crispy
very active
Madrigal music is playing - Voices can faintly be heard, "Please leave this patient undisturbed."
Posts: 776
|
Post by Crispy on Sept 16, 2017 18:36:03 GMT
Well I finally had some time to toy around with these. What I found was not encouraging. It looks like this headphone is all 'clicked' together with the intention of not being serviceable. Well ... that's what I suspect. I did not dare to force it open a bit afraid I would crack some parts rendering the one I have useless. Mine don't creak (yet) but when I press the cups down hard I can feel plastic rubbing on plastic and figure that can start to creak after a while. Wiggle the cup around and look into these holes to see where the cup swivels on. Squirt/apply a small amount of (silicone) lubricant exactly on the spot where the hinge is and listen if the creaking reduces/disappears. Thanks Frans for the time and trouble you have taken to try and solve this problem, it looks a bit fiddly but I will give a go when I get some time. I think I will have to be careful with the Music seal and shure pads they look a bit tricky? Also do you think once stripped down maybe a silcone grease or maybe a PTFE spray or grease may work better? Do the bits in the middle near the wire need spraying?
|
|
Rabbit
Administrator
Posts: 7,087
|
Post by Rabbit on Sept 16, 2017 20:06:11 GMT
You use a Kameleon with the Philips, Chris? I'm using mine modded by Frans but not from a Kameleon. Haven't got a filter for it.
|
|
Crispy
very active
Madrigal music is playing - Voices can faintly be heard, "Please leave this patient undisturbed."
Posts: 776
|
Post by Crispy on Sept 17, 2017 18:08:40 GMT
You use a Kameleon with the Philips, Chris? I'm using mine modded by Frans but not from a Kameleon. Haven't got a filter for it. Sure do use a kameleon with the Philips Ian. I bought my Philips already modded from Frans and they do not need a filter. To listen to them through a Kameleon I use a 20db Flat Gain module, I use the 20db module because the signal from my mobile phone is weak, and it boosts the signal to proper listening levels. They too are a very good listen when you need isolation from the television etc
|
|
Rabbit
Administrator
Posts: 7,087
|
Post by Rabbit on Sept 17, 2017 18:50:21 GMT
Oh, I see...... I was wondering just how deep you wanted that bass to be!!!!!
|
|
solderdude
Administrator
measureutternutter
Posts: 4,882
|
Post by solderdude on Sept 17, 2017 18:53:25 GMT
Only in the recessed areas you need to do some greasing. When you have opened them up and look inside you will see where parts move and rub on each other. do not grease the part near the wire... only on the inside.
When you lift/push the pads a little bit to the side at the spots where the screws are (at 12, 3, 6 and 9 o'clock) you will see small holes cut in the fabric. You can poke a small screwdriver through those holes and unscrew the screws 2 or 3 windings. When all 4 are loose you can lift the baffle somewhat and then there is enough room between the music seal and the baffle and the pads come off easily.
Then remove the 4 screws and lift the baffle out.
How to install the pads again is described in the mod manual. Basically you put the 4 screws back in a little bit (only 1 rotation or so for each screw) Then you put the pads over the baffle and 'tuck' the edge between the music seal and the baffle. I use a bit of cello-tape to prevent the edge from coming out under the baffle again. Tuck it in till it sits nice and tight and secure it with pieces of tape. Now tighten the 4 screws (do not overdo it, the thread in the plastic can't take much obuse) though the holes in the fabric. Carefully remove the cello-tape and you're done.
|
|
Crispy
very active
Madrigal music is playing - Voices can faintly be heard, "Please leave this patient undisturbed."
Posts: 776
|
Post by Crispy on Sept 17, 2017 19:06:22 GMT
Oh, I see...... I was wondering just how deep you wanted that bass to be!!!!! Just deep enough to shake the fillings out of my rotten teeth
|
|
Crispy
very active
Madrigal music is playing - Voices can faintly be heard, "Please leave this patient undisturbed."
Posts: 776
|
Post by Crispy on Sept 17, 2017 19:11:07 GMT
Only in the recessed areas you need to do some greasing. When you have opened them up and look inside you will see where parts move and rub on each other. do not grease the part near the wire... only on the inside. When you lift/push the pads a little bit to the side at the spots where the screws are (at 12, 3, 6 and 9 o'clock) you will see small holes cut in the fabric. You can poke a small screwdriver through those holes and unscrew the screws 2 or 3 windings. When all 4 are loose you can lift the baffle somewhat and then there is enough room between the music seal and the baffle and the pads come off easily. Then remove the 4 screws and lift the baffle out. How to install the pads again is described in the mod manual. Basically you put the 4 screws back in a little bit (only 1 rotation or so for each screw) Then you put the pads over the baffle and 'tuck' the edge between the music seal and the baffle. I use a bit of cello-tape to prevent the edge from coming out under the baffle again. Tuck it in till it sits nice and tight and secure it with pieces of tape. Now tighten the 4 screws (do not overdo it, the thread in the plastic can't take much obuse) though the holes in the fabric. Carefully remove the cello-tape and you're done. Thanks for the instructions Frans, I was a bit worried about how to get the pads off, but will go very carefully and hopefully not knacker anything up Had a few beers tonight so nothing until I am completely sober, as I really like the Philips a very good cheap headphone. I will take some pics and report back on whether the job was successful or not?
|
|
Crispy
very active
Madrigal music is playing - Voices can faintly be heard, "Please leave this patient undisturbed."
Posts: 776
|
Post by Crispy on Sept 18, 2017 15:36:47 GMT
I had some spare time this afternoon and thought I would try and solve the creaking problem in my Philips headphones. First of all I was amazed how much wear there was on the headband, did not realise I had worn them so much. Secondly I did not realise how mucky the pads were Before: After: The shure pads and music seal were easy to come off (Phew I was dreading the job) Inside once the driver was removed: Cleaned up the stray wool from the felt ring: The felt ring was a right pain to get off: The inner disc was easy to pry out exposing the nitty gritty part of the repair: Silicone spray into the moving parts: New adhesive on the felt ring: Felt ring back in place: Everything back together: So now the big question? Did it stop the creaking - well the answer is definitely NOT - in fact I would say it is worse I would advise anybody else who has the same problem NOT to use silicone spray, I googled what is best for plastic lubricant and the majority of sites say use a Silicone spray which does not help. I may try PTFE spray on the other side to see if that is any better. Or if anybody out there knows of something different, it has to be worth a try? One problem I can see is how to remove the silicone spray once it has been applied?
|
|