The Defpom Forum, for RadioMods, S&M Software and Music by The Defpom

Hi Dave, Sounds plausibel to me. At this point an order has been placed to obtain two new valves as nothing else seems to give any troubles. I didn't get the chance to test the amp without the valves fitted so I'll do this a soon as possible... it probably (hopefully) figures :wink: Thanks for the h...

... meanwhile I checked all the capacitors and diodes... all fine. I checked the relay switch as well and it works properly. Only thing left seem to be the valves..? What I found out is that when the amp is hooked up between the transceiver and the antenna it gives a bad SWR whereas my own amp doesn...

Hi all! Today I received a RM KLV350 with a possible short circuit problem from a very dissapointed owner and good friend. I've tried some plausible solutions but none worked. The thing is that when the amp is switched on and on stand-by, transmitting/receiving is no problem and the valves light up ...

Hi Ralph!, Yesterday I unsoldered C116 after a long search for this tiny component and tested it. (Un)fortunately the condensator passed the test and was soldered back in. I checked the other C115/114 and they worked fine too... Hmzz.. I guess this baby needs a real doctor, only if it was to find th...

Hi Ralph! Thanks for the suggestion! I didn´t have the uppertunity yet to check this capacitor but as internet provides me with some info, this issue was mentioned a couple of times on different sites. But if it is this capacitor, does it explain the 13,8v between TP4 and TP3? Thanks! 19WAC495 John

Radio Make and Model: President Lincoln HR2510 PCB Number: Main board PB-111AB PLL Number: PCB PB 121 AC HCT 58 NY 94V-0 Test gear available: Watt meter, DC AM meter, oscilloscope Symptoms: No power on FM/AM whatsoever. On SSB the is a very slight noticeable signal on an external reciever. This all ...

Hi! First of all my apologies for the late reply! I just bumped into this old thread while searching the web for any more mods for my 2950DX! Anyway, Initially I decided to let the idea of an external S meter go because I wasn't able to obtain satisfactory readings from this particular meter despite...

Thanks for the helpful reply's! I wasn't sure that the cathode side of the diode D14 was the right point for hooking up an S meter but I tried it a few hours ago and it seems to work perfectly!... However, it needs some alignment obviously due to the fact that the used s meter was a little too jumpy...

Hi all! After some modifications and a proper re-alignment in order to let the radio perform perfectly for it's class, I would like to add one item to complete the radio's modification and that's an external S-meter. Now, I might have a slight idea where to look on the PCB to find a point where I ca...

Hi all! First of all my apologies for me possibly placing the question in the wrong subforum... :oops: Second of all I would like to thank those responsible for creating this forum and giving me the chance to (hopefully) get an answer to the following issue.. I purchased a Ranger 2950DX and couldn't...