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Yep I can see that. I used a small precision screw driver and a tiny ball peen hammer to coax the nut loose then kept flicking the nut till it fell apart.Sent from my T-Mobile 5G Device

Do you remember where the shorting trace is? I have not heard of that before. I did get that little bolt/ nut out of the band switch and bypassed the filter board. There is no way to get conventional

from what I’ve read, the LCD uses LEDs to provide the lighting. And, there are quite a few of them, like 64 leds…. the SW8 used a single bright LED with light pipes to the LCD. I don’t believe,

There is a company called “LCD Parts”, who sell replacement LED illuminators in strips that can be cut to length. Included with them is the required power supply. The cut-to-length” feature is

The VCO is running or you would not see a reading on the counter at all. Check to see if it locks in the band segments 15.0 through 16.5 MHz. If so you may have an N code problem. The A6 bit is unique

I've been following this thread, as I have a similar problem in my circa 1998 Yamaha stereo receiver. It has yellow LCD digits and they're now barely visible. Steve Wedge, W1ES Time flies like an

I think you can replace the illuminator in this display. It’s been a while but I recall having done it once. Gary W0DVN

There was a reason the power supply fuse popped. Check voltages there first. Gary W0DVN

The same on all bands. The max peak in TUNE mode is closer to 80mA, not 100mA. protonmail.com_at_groups.io_lastradioman@...> wrote:

Are the other bands working?

My L7 had a shorting trace as well but I chose to remove the filter because that was where I mounted the step start, soft key and bias board at.

Group, I'd welcome any advice on where to start looking. The 5A fuse on the AC4 blew in my absence. Replaced the fuse, and cannot get a peak greater than 0.1A when switching from SSB to tune,

On one L7 that I serviced it had a "shorting" trace on the 11M filter? On Wednesday, December 25, 2024 at 07:38:24 AM EST, Roger KW4EMF <rogerlhill@...> wrote: Yes it had the band pass

This morning I confirmed that the band switch that switches the 10 volts to either the low VCO or the high VCO is working just fine. Any other ideas why on 15 and 10 meters the display is reading 51

Gang… I have a R8 sitting on my desk I got from a local ham. He went through it and replaced several handfuls of capacitors. The encoder was shot so he machined a new coupling to fit an off the

Peter, look for parts that are used only on 40m. These include various capacitors and inductors as well as a few resistors. Did you smell any smoke before this happened? I had one TR-4C that had a

I cleaned the pins and sockets on the VCO board today as well as the pins on the main board and saw no change. Have not figured out the best way to clean the band switch. 73, Jim Ve1RB

My TR-4C works fine on all bands with the exception of 40. Sensitivity is very low as if the antenna was unplugged, hum is heard in the speaker, and there is no ouput. The S1B-C section of the

Steve & Group, Found the answer: After email with Frank @ Noble, I learned that he'd designed the 450 and 250 CW filters with a slight offset that puts the filters on the LSB side of the PBT. 73 Jay

It's been a few years but IIRC I used a dental pick to coax the nut off and then popped the screw out. "Roger KW4EMF via groups.io" <rogerlhill@...> wrote: -- 73 -Jim NU0C