Heres IC4 values (RX is without TR33 on board, since when it's installed the CB is stuck at transmit)
______TX___RX__
pin 6 4,68v 4,00v
pin 7 4,30v 1,92v
pin 8 7,82v 8,25v
Search found 9 matches
- Friday 30th May 2008, 21:44
- Forum: CB Radio Repair and Troubleshooting
- Topic: Presiden Jackson stuck on transmit
- Replies: 15
- Views: 23238
- Friday 30th May 2008, 8:46
- Forum: CB Radio Repair and Troubleshooting
- Topic: Presiden Jackson stuck on transmit
- Replies: 15
- Views: 23238
No change, only high pitch sound is now constant steady and really loud, both transmit and receive leds are glowing a bit. Red glows a bit more than green. I reinserted the original transistors and the sound is precicely the same as begin with. When I put roger beep on both leds starts to flash rapi...
- Friday 30th May 2008, 7:49
- Forum: CB Radio Repair and Troubleshooting
- Topic: Presiden Jackson stuck on transmit
- Replies: 15
- Views: 23238
- Friday 30th May 2008, 1:25
- Forum: CB Radio Repair and Troubleshooting
- Topic: Presiden Jackson stuck on transmit
- Replies: 15
- Views: 23238
Emitter voltage is 8,50 +-0,1v and I checked transistor and it seems to be right. Measured wrong. So Emitter and base values are around. Now, what drops Base down to 3.37v? And the sound I hear when tr33 is installed sounds like capacitor charging, high pitch sound with increasing pitch, just like c...
- Thursday 29th May 2008, 20:12
- Forum: CB Radio Repair and Troubleshooting
- Topic: Presiden Jackson stuck on transmit
- Replies: 15
- Views: 23238
TR33
TR33 is now 2SB892 replacing 2SB1035 (original transistor that was in the radio), according to ECA transistor book 892 is simular to the 1035 and pin polarity is PNP, also pin order is suppose to be E-C-B Is B892 facing right way when its on a same position as in the picture of previous post. (That ...
- Thursday 29th May 2008, 11:42
- Forum: CB Radio Repair and Troubleshooting
- Topic: Presiden Jackson stuck on transmit
- Replies: 15
- Views: 23238
Voltage values
Ok, maybe I should've posted the voltage values in the first place. So here they are (with original TR32 and TR34 and replaced TR31 and 33, since it stopped transmitting constantly after I put the new transistors in). TR31 E RX 7,48 TX 0,02 - C RX 8,50 TX 7,47 - B RX 6,84 TX -0,04 TR32 E RX 0 TX 0 -...
- Wednesday 28th May 2008, 23:28
- Forum: CB Radio Repair and Troubleshooting
- Topic: Presiden Jackson stuck on transmit
- Replies: 15
- Views: 23238
Still issues, but faint receive
Ok, I have replaced TR31-34 and both 25v 1000uf caps, also D66 and resistors seem to be ok. It still doesn't work. Now I hear electrical fuzz, transmit doesn't work at all. When I transmit with other CB I hear the sound extremely faintly from PJ speaker and theres an extra sound that sounds like bzz...
- Wednesday 28th May 2008, 9:35
- Forum: CB Radio Repair and Troubleshooting
- Topic: Presiden Jackson stuck on transmit
- Replies: 15
- Views: 23238
Re: Presiden Jackson Stuck in TX.
Try removing TR33, if this cures the problem then replace with a new transistor. Yeah, was reading about that, was going to measure the voltages (found a thread in here that you have replied to), but then I came accross a problem with schematics and the PCB, PCB has typo error in it . theres 2 TR11...
- Wednesday 28th May 2008, 7:38
- Forum: CB Radio Repair and Troubleshooting
- Topic: Presiden Jackson stuck on transmit
- Replies: 15
- Views: 23238
Presiden Jackson stuck on transmit
Hi! I have a problem with my PJ Model - President Jackson (A-F band version black faced) PCB - PB-042AE PLL - Don't know (Kinda new to this stuff) I think its MC145106 maybe Radio is stuck on transmit. It has been modified with following mods: hxxp://www.radiomods.co.nz/presidentjacksonmods.html It ...