Hello, I'm glad to re-find this group post yahoo. I have done the following to my TM-255. 1) Replaced the power up problem tantalum cap (1st time I ignored the polarity - worked for a couple years) 2n

My display is very dim, but the menu is set at the highest brightness or d1. Can I just lift the bulbs (PL1 to 4) out of the circuit broad after I cut the two leads or is there something else holding

Hi @all I got a tm255 with the problem there is very lowaudio in receiving mode. Is this a known problem with caps from the NF amplifier?? I didn’t find any damaged caps. :( 73 de Alex DB4TA

hello friends, I think I did some mistakes during the last disassamble of the radio and now does not turn up. With a voltage meter I see I don't have any voltage at PIN B of CN605 (board C5 near the b

Hello everyone, I got a TM-255E with the MC-45 microphone. To transmit DTMF tones is it enough to get the MC-45DM mic or do I need the TSU-8 unit? Would the TM-V71 MC-59 mic also do the job? 73 Giovan

Hi all, FYI: On request I have placed the adjustments of my TM255 on my website. https://on4cdu.net/tm-255-modifications/ 73, Hans, ON4CDU

I am a new 255E owner and for the moment I am very happy with the radio, except maybe for a slightly noisy volume pot (see my previous post). FM and SSB work great. I wonder in which years it was in p

Hello everybody. I just got an used TM-255 and I am here. I have a basic question: I need to remove the squelch and volume knobs to spray some contact cleaner inside the volume pot. These are simply p

Hi all, this is my first post to the group. I use my TM255e for EME on 23cms and need to have more shift on the RIT to correct for doppler (2.9khz max) is this possible? If not is it possible to TX on

Hello @all, i had a issue with my tm-255e. The RX audio will work fine in FM mode. In SSB mode the RX audio is there but very quietly and the RX noise is almost inaudible. Anyone a idea where so start

Good day, Can anyone know about power output tm-255 (not A/E/S), & module final type? '73

Maybe the fan has stopped running

Behind the fascia is some 'foam' type material which holds the buttons in. Over the years mine has literally disintegrated (see attachment) and now the buttons just fall out. Has anyone successfully r

Hi TM-{255,455}-fellows, my TM-455E has developed the following problem: when keying the transceiver in CW mode using a straight key attached at the rear socket (mono plug), the sidetone matches the k

Hi my name is Jojo and my CallSign is KM6EHD from Los Alamitos, California. I have a question regarding my Tm-255 only. Not A, D, E or S and its from Japan 144 to 146.00Mhz only. Is anyone have the sa

Hi all, My TM-255 works fine when using low power in all modes. When selecting high power it looks like the transceiver is going through his knee and restarts. SWR and power supply+ cable and fuse are

If by any chance you have a TM-255E on the shelf that you are not using and would consider selling, then please drop me a note! I might be interested:-) Br, Anders / OZ3ACB anders.strange@...

Hi Guys, anyone with a broken TM-455? I'm looking for a functional Controller/Clip-off face, as mine has ANT damage on the processor circuitry. Alternatively, can the body be connected to a PC program

Hello All, I wanted to personally welcome you all to my new group! My sincere thanks for joining https://on6mu.groups.io/g/ON6MU/ Just FYI and concerning UISS suite. I have made a few sub groups, like

I have a nice TM-255A radio that I would like to use on FT8, but I can not find ANYONE who has actually used the radio on FT8. I have received a number of technical answers to my request, but I am loo