tag:blogger.com,1999:blog-562014776850671427.post6255862284382613254..comments2022-08-13T10:01:31.327+02:00Comments on EB5AGV RadioRepair: Worse than the H1N1... ceramic filter pandemicJose EB5AGVhttp://www.blogger.com/profile/12290015287468884026noreply@blogger.comBlogger29125tag:blogger.com,1999:blog-562014776850671427.post-89665728532930475052017-12-29T09:51:25.498+01:002017-12-29T09:51:25.498+01:00US4LOM,Yuri
All this problems happened with TOKO ...US4LOM,Yuri<br /><br />All this problems happened with TOKO filter only. I bealive that manufacturer use inproper material for the body of filter thus is very hydroscopic. That is the real cause filter fails.<br /> Many other filters works good decades of years, even the DC is on his pins.I am observe lot of scheme previos years.Half of them DC is present on the filter pin. And all this rigs worked perfectly now.Anonymoushttps://www.blogger.com/profile/13730606115215130368noreply@blogger.comtag:blogger.com,1999:blog-562014776850671427.post-27857541767197847162017-12-29T09:50:23.071+01:002017-12-29T09:50:23.071+01:00US4LOM,Yuri
All this problems happened with TOKO ...US4LOM,Yuri<br /><br />All this problems happened with TOKO filter only. I bealive that manufacturer use inproper material for the body of filter thus is very hydroscopic. That is the real cause filter fails.<br /> Many other filters works good decades of years, even the DC is on his pins.I am observe lot of scheme previos years.Half of them DC is present on the filter pin. And all this rigs worked perfectly now.Anonymoushttps://www.blogger.com/profile/13730606115215130368noreply@blogger.comtag:blogger.com,1999:blog-562014776850671427.post-38168512204741429662017-12-08T07:07:54.724+01:002017-12-08T07:07:54.724+01:00I have repaired Ts2000's with this problem FT-...I have repaired Ts2000's with this problem FT-817nd also, and Marine rigs Uniden.<br /><br />For replacement I use RS, 747-5048 for type "G" (CFWLB455KGFA-B0), 747-5044 for type "E" (GFWLB455KEFA-B0), and 318-3316 for type "H" (CFWLB455KHFA-B0),these all have 3 ground pins one side and the in and out on the other.<br /><br />TS2000 type K requires 3 x "E" and one "G".<br /><br />On the RS website there is an error in description of one of them but the picture and part is correct.<br />Regards<br />Andrew ZL2ALW (at) yahoo.comAndrew ZL2ALWnoreply@blogger.comtag:blogger.com,1999:blog-562014776850671427.post-35086853038306026872017-10-10T11:53:03.652+02:002017-10-10T11:53:03.652+02:00I have repaired a number of FT897's with this ...I have repaired a number of FT897's with this issue - so far all the filters I have seen have no sealing at all, and come apart very easily, and are always full of wet green corrision. The replacements sent out by Yaesu are now fully sealed with epoxy resin, that should help prevent any further issues.<br /><br />George G7GQCGeorgehttps://www.blogger.com/profile/08568513518815488951noreply@blogger.comtag:blogger.com,1999:blog-562014776850671427.post-38765831132788217002016-11-26T09:36:29.895+01:002016-11-26T09:36:29.895+01:00I have FT897D, no out or very less power out put i...I have FT897D, no out or very less power out put in SSB,AM and CW but in FM mode it works fine, replaced 455khz ceramic filters still the same ,,, any suggestions please send me to vu3edg@gmail.comPradeephttps://www.blogger.com/profile/04810237878009738216noreply@blogger.comtag:blogger.com,1999:blog-562014776850671427.post-55108404948737353662016-10-21T20:38:40.419+02:002016-10-21T20:38:40.419+02:00The problem seems to be that the filters have had ...The problem seems to be that the filters have had a bad batch that were improperly sealed. To expand on the info that is common on the internet; as usual the whole story isn't t there. During the soldering process, there is a couple of chances that water leaks into the improperly sealed filters - washing and water based flux. It is likely in the majority of the failures, the water was already in there from when the radio was manufactured and was detined to fail. This is why most are replaced without blocking caps without further issue, or radios that lasted without failure. No water, no electromigration. Maybe if no water was already in there, and the radio was exposed to humidity or got wet, etc. - but since the pcb's are flooded during manufacture, this is probably almost never the case.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-562014776850671427.post-40198104685901487692015-10-02T12:47:13.520+02:002015-10-02T12:47:13.520+02:00Now my ft857d (2007) has too noise on hf ssb/cw mo...Now my ft857d (2007) has too noise on hf ssb/cw mode and low sensibility in vhf. I Would replace the 4 toko filters. Any infos about the new ones? Thanks in anvance.Anonymoushttps://www.blogger.com/profile/11357370380356017483noreply@blogger.comtag:blogger.com,1999:blog-562014776850671427.post-57126199665707720292015-01-31T22:03:32.295+01:002015-01-31T22:03:32.295+01:00Hola Jose. se han cambiado los tres filtros y a qu...Hola Jose. se han cambiado los tres filtros y a quedado bien excepto SSB.<br />Me reciben de igual manera en USB que en LSB, igualmente recibo en LSB que en USB. (double sideband)<br />Que puedo hacer?Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-562014776850671427.post-3870946763799015842014-10-12T11:31:45.094+02:002014-10-12T11:31:45.094+02:00Hello Lars,
Unfortunately even if you don't b...Hello Lars,<br /><br />Unfortunately even if you don't buy more YAESUs, you could have a similar problem. I have replaced tons of bad filters on other rigs, as Kewnwood TS-2000, TM-D700 series, and so on. It is a mixed fault both from rig manufacturers, who didn't use blocking DC caps but also from the filter manufacturer, who produced badly sealed units.<br /><br />73 JOSE EB5AGVJose EB5AGVhttps://www.blogger.com/profile/12290015287468884026noreply@blogger.comtag:blogger.com,1999:blog-562014776850671427.post-53889004849525654212014-10-08T14:00:08.741+02:002014-10-08T14:00:08.741+02:00The fault also has arrived at my 3 year old ft857d...The fault also has arrived at my 3 year old ft857d, and have observed all the problems you describe. My choice in the future is not Yaesu products...<br /><br />rgds oz1fjb/ou2vAnonymoushttps://www.blogger.com/profile/04955482789368045738noreply@blogger.comtag:blogger.com,1999:blog-562014776850671427.post-24698982662028276572014-06-14T14:51:32.977+02:002014-06-14T14:51:32.977+02:00I found exactly same problem with ts-2000, ft-897,...I found exactly same problem with ts-2000, ft-897, vx-7, vx-6, vx-8, marine Icom radios, Motorola FRS and others commercial rigs. Just a pandemonium!Eduardo Gonzálezhttps://www.blogger.com/profile/12789149840512618004noreply@blogger.comtag:blogger.com,1999:blog-562014776850671427.post-51026681096173930672014-01-30T07:21:45.918+01:002014-01-30T07:21:45.918+01:00I replaced ALL three filters in several Yaesu FT85...I replaced ALL three filters in several Yaesu FT857-897. Some still have cracling noises and very strange AGC behaviour. I wonder if the first roofing filter might also be affected, still have to dig in the schematic, but my car radio FT857 with added caps and new filters still is very noisy. Any ideas ????<br /><br />pedro on7wp@telenet.beUnknownhttps://www.blogger.com/profile/03994506796969946243noreply@blogger.comtag:blogger.com,1999:blog-562014776850671427.post-83344049404123128842013-11-24T18:38:34.695+01:002013-11-24T18:38:34.695+01:00Dear jos,
As per your advice, i have replaced cf10...Dear jos,<br />As per your advice, i have replaced cf1005 = alfym455h with a murata equivalant -but not with an exact pin to pin equi- and it solved my problem of DSB! Great job! Now my rig is on road... 73sAnpunoreply@blogger.comtag:blogger.com,1999:blog-562014776850671427.post-59512708523002814512013-10-17T18:50:31.503+02:002013-10-17T18:50:31.503+02:00Dear jos,
Tnx for your comment. I am still brave t...Dear jos,<br />Tnx for your comment. I am still brave to open my ft897 to fix it. but adding cap is advisable? i m from india and worried if i can get those ceramic filters,.... cheers..73sAnpunoreply@blogger.comtag:blogger.com,1999:blog-562014776850671427.post-42850855451656921062013-10-11T10:17:14.361+02:002013-10-11T10:17:14.361+02:00Anpu, what happens is that a wide filter, due to l...Anpu, what happens is that a wide filter, due to leakage, is in the circuit, instead of only the narrower SSB filter. That means that thre is no proper LSB/USB filtering and the result is that the rig works in DSB (double sideband). So you need to replace the three 455kHz IF ceramic filters to fix your unit.<br /><br />73 JOSE EB5AGVJose EB5AGVhttps://www.blogger.com/profile/12290015287468884026noreply@blogger.comtag:blogger.com,1999:blog-562014776850671427.post-13697490288001708922013-10-11T09:48:59.457+02:002013-10-11T09:48:59.457+02:00With my FT897D, i can receive on both lsb and usb ...With my FT897D, i can receive on both lsb and usb when other station transmit only in lsb. And even he can hear me on both LSB and USB when i transmit on LSB on 7mhz. What could be the problem. Please help. I tried by transmittig on USB, and the other station can hear me again on both LSB and USB.Anpunoreply@blogger.comtag:blogger.com,1999:blog-562014776850671427.post-82048259066377485012013-01-06T11:02:28.582+01:002013-01-06T11:02:28.582+01:00Hola/Hey Jose and folks! Que tal? Tnx for the info...Hola/Hey Jose and folks! Que tal? Tnx for the info. Seems to be that Vertex Standard VX-351, 351PMR and VX-146 have the same problem. 73 de Jukka OH2JIN Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-562014776850671427.post-78817922112968988652012-08-20T22:03:55.984+02:002012-08-20T22:03:55.984+02:00These filters are also found in the Vertex Standar...These filters are also found in the Vertex Standard series of commercial radios. They are dropping like flies. Especially the VX2200 VHF and the VX354 VHF. The symptom shows up after reprogramming channels to narrow band 12.5 from customers using only wide band. And by then the radios are out of warranty. Talk about mad customers.... And worse, Im scared to put the TOKO filters back in. I'm having a time trying to find replacements by another brand.<br /><br />A frustrated Vertex Standard dealer...Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-562014776850671427.post-36133418663987785942012-07-08T02:01:43.361+02:002012-07-08T02:01:43.361+02:00Greetings Jose,
Sad to say, the ceramic filter mi...Greetings Jose,<br /><br />Sad to say, the ceramic filter misuse problem appears in quite a lot of other receiving gear as well. I, too, stared with disbelief when I saw sizable DC voltages being applied to ceramic filters. The result is slow degradation over time, just as you've noted; either the receiver goes deaf, or it develops a case of the crackles. I just replaced three failed ceramic filters in a Realistic STA-90 (ca. 1976) that was deaf to the world -- all three of the filters see 5 vdc or more when the unit is operating.<br /><br />Thanks for the informative site!<br /><br />73,<br />Tom N0GSG<br /><br />http://n0gsg.no-ip.orgAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-562014776850671427.post-71776730083668548132012-06-18T22:32:49.374+02:002012-06-18T22:32:49.374+02:00Hola José
Usted decirme dónde puedo comprar para ...Hola José<br /> Usted decirme dónde puedo comprar para sustituir los filtros de cerámica en un FT897D que usamos aquí en nuestras actividades con los Scouts?Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-562014776850671427.post-67685601843926809082012-04-03T00:56:57.145+02:002012-04-03T00:56:57.145+02:00good day my friend!
i would like to share this ab...good day my friend!<br /><br />i would like to share this about ceramic filters which i found on the net:<br />http://sv8ym.blogspot.com/2010/07/mysterious-case-of-withering-filters.html<br /><br />nice website, very informative, keep the good work! i learned a lot from this site! tnx<br />dw2nah/jonathan<br />ilocos sur, philippinesAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-562014776850671427.post-44295730464821574402011-11-20T13:23:16.528+01:002011-11-20T13:23:16.528+01:00Hi everbody . I would like to thank particularly E...Hi everbody . I would like to thank particularly EA5AGV Jose and AA7FV Darrel and general thank for others OM contibutions.<br /><br />I've purchased a second hand FT 857D (2007 model), like new because never been powered before me ! <br /><br />Unfortunatly I notice immediatly the crackling noise on my 857D . <br /><br />I've been convinced in adding the 10 nF smd capacitors , because beeing new this radio shouldn't be bad !<br /><br />I operate myself my FT857D and with time and its now REPARED !!<br /><br />It's unbelivable , why didn't Yaesu engeneers put these recommanded capacitor ???!!<br /><br />At last i've also purchased a TS2000 whithout any problem !o)<br /><br />73 and Thanks for reading . <br />F5RAG Iñaki.<br />Saludos , amitiés .<br /><br />Hope to Ear you on this air .Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-562014776850671427.post-42165735928022566692011-08-18T22:21:40.304+02:002011-08-18T22:21:40.304+02:00Good afternoon Jose.
Following your tips replaces ...Good afternoon Jose.<br />Following your tips replaces all of my ceramic filters FT 857, including CFJ455K14, bought all direct yaesu USA. Solved the problem of USB and LSB reception they were receiving in both DSB. It remained a problem, the FM sensitivity is normal, when moving to any AM or SSB S9 +30 signal before passing the S8 or S9. I am suspicious of D1076, D1078, D1068.<br />I would love to get your opinion before I venture to replace these diodes SMD.<br />Thank you!<br />73 of PY5KC<br />Alessandro<br />acscwb@bol.com.brAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-562014776850671427.post-46708662907249713722010-08-15T04:11:30.751+02:002010-08-15T04:11:30.751+02:00Hola José:
Encontré el mismo problema en un TS-200...Hola José:<br />Encontré el mismo problema en un TS-2000, los filtros cerámicos CF1, CF2, CF3 y CF4 presentan una baja resistencia a tierra (aprox 90 ohms) Probé a sustituirlos con otros Murata y funciona bien, pero son de diferente tamaño. Pedí ya nuevos filtros a Kenwood y espero los nuevos no den problemas. (En mas de 20 años de reparar radios únicamente he cambiado un filtro cerámico) 73´s Guillermo XE1GFFAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-562014776850671427.post-66700295579016951342010-08-01T17:19:59.836+02:002010-08-01T17:19:59.836+02:00Hello Leandro,
Thanks for letting us know about y...Hello Leandro,<br /><br />Thanks for letting us know about your experience. I have so far replaced three damaged filters in different rigs and I am afraid lots more are on its way.<br /><br /><b>73 JOSE EB5AGV</b>Jose EB5AGVhttps://www.blogger.com/profile/12290015287468884026noreply@blogger.com