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havent disassembled yet..the rabbit hole goes deeper..this radio has the internal autotuner..just for curiosity I followed the user manual procedure to autotune and I hear the gears turning for around 7 seconds and then a long intermitent beep..I guess its the warning alarm..on my meter with a...

After studying the service manual, finally found connector 7 at the digital board..the connector supplies 8,5,14 volts and all are in spec.. So probably Im looking at a bad inverter.. would a LED strip work in place of the cathode tube?

thank you sir!

Hi..do you happen to have one for Realistic TRC-451?

Nomad, heres a screenshot of the circuit..I cant find the PIN 1 and 2 where 8v and 2v are..I do see the tiny inverter and the CFL and usually thats a tiny AC line bulb..

oh upto now, the VFO knob is working perfectly..all buttons are working too..so I guess the DSP is working ok.. I dealt with similar display problems with hifi recievers..the flourecent circuit is always a small 5 volt AC line tapped to the transformer..almost always that line goes 12 volts and...

thks! hmm this will be a tough one..kind of scared to crack it open lol.. Ill dl the service manual and lets see If its doable..

I got this radio for a trade.. TX and RX are ok.. But it has a weird problem. the display overbrightens, lighting a bit segments that are not in use..its like the backlight is too strong.. is this like that or is there a way to correct this?

I use the TinySA as a sig generator for aligning CBs..works great at that..but, I dont know why, it never detects a AM carrier correctly, its always like 6k off compared to a SDA tranceiver..I have calibrated it several times with the self cal test..I also wrote about it at the Tinysa forum, not...

what? nooo..How do I lower dead key? these fets are hard to get!

tks Kop..is was very useful..is 6 watts AM at 20 m ok?

on my bench..the mosfets are replaced and upto now its TX per specs..But I was itching to measure voltage but didnt dare to..usually these radios are calibrated by measuring current draw at the DC..anybody would happen to know voltages on the fets?

sorry for your loss..after having several dogs that I been with from birth to death, decided to not have anymore..grief is real and painful..

you picked up your pets?

thks Nomad..theres a fellow around me that has a room full of vintage radios and sells for cheap..Im considering to make an offer for similar sbb radios and pull out that 1969 if I find it within. what 23 channel radio carry the 1969?

Well, after couple of days servicing car audio, back to what I strive to learn! Ok, did Handy's 170 cap...and I got..drum roll...tada! 1 watt TX AM deadkey! Now you may say pff but for me thats a huge achievement! this radio was dead, DEAD! after tuning the TX related transformers and inductors...

nah..doesnt have bracket holes lol

Finally did this one! was a trade for tiny mobile cb.. This bad boy was a wreck..blown power supply, blown final, RX upto ch 32.. Fixed all that, replaced the 4 amp PS trans for a 10 amp rate and a new final.. 5.5 deadkey swinging upto 19 pep.. The handset needs a new cable, it causing feedback...

yea..how hard could it be..rather have that than hundreds of useless channels and gimmicks

Thks Handy! As I was looking at your post and preplanning the op, I found several ceramic caps on the radio that wasnt supposed to be there, most were too high..I changed them according to the manual parts list except 1, its supposed to be a 470pf but I only had a 390pf on hand.. Now, Im seeing...