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by ramblingman
Tuesday 7th Jul 2009, 10:20
Forum: CB Radio Repair and Troubleshooting
Topic: COBRA 148 PC 412 ISSUE
Replies: 4
Views: 4507

Re: COBRA 148 PC 412 ISSUE

are all the voltages correct at the voltage regulator??
by ramblingman
Tuesday 7th Jul 2009, 2:27
Forum: CB Radio Repair and Troubleshooting
Topic: COBRA 148 PC 412 ISSUE
Replies: 4
Views: 4507

Re: COBRA 148 PC 412 ISSUE

d44 is the anti spiking diode
i would check the big electroylic cap,in the right rear corner of pc board
it will be a 470 mfd @ 10 vdc,i think it is c-135 or 136
anyway if it needs replacing replace with a 470 mfd @ 25-35 vdc
by ramblingman
Tuesday 7th Jul 2009, 2:11
Forum: CB Radio Modifications
Topic: Galaxy 93T Mods
Replies: 4
Views: 2044

Re: Galaxy 93T Mods

should be clockwise.
but just turn it full clockwise and check,if it cuts off modulation.then just
turn it full counterwise..youll get it.
by ramblingman
Monday 6th Jul 2009, 2:35
Forum: CB Radio Modifications
Topic: tr-396fc i want lower deadkey,, how??
Replies: 2
Views: 1431

Re: tr-396fc i want lower deadkey,, how??

what is the p.c.b number???
on most ranger units-vr14 adjust the carrier
and vr16-adjust the amc-modulation
by ramblingman
Sunday 5th Jul 2009, 10:38
Forum: CB Radio Modifications
Topic: Galaxy 93T Mods
Replies: 4
Views: 2044

Re: Galaxy 93T Mods

vr16 is the amc adjust
by ramblingman
Sunday 5th Jul 2009, 10:03
Forum: CB Radio Repair and Troubleshooting
Topic: Uniden pc68xl NO TX power
Replies: 2
Views: 2255

Re: Uniden pc68xl NO TX power

dose the tx light come on when you key the ptt,,if not ck r60 for o/c
also ck pin 6 of ic 2 for 6 volts,if not present change ic 3,it is bad.
by ramblingman
Sunday 5th Jul 2009, 9:51
Forum: CB Radio Repair and Troubleshooting
Topic: Galaxy Dx 55v no modulation
Replies: 2
Views: 1721

Re: Galaxy Dx 55v no modulation

ck c131 for shorts or o/c
by ramblingman
Saturday 31st Jan 2009, 11:38
Forum: CB Radio Repair and Troubleshooting
Topic: cobra 200 no sound
Replies: 7
Views: 2389

cobra 200 no sound

hello,,,i had similiar problem on a 150 gtl dx
i think the p.c board is very similiar..
found the problem to be,,one of the regulators,the
one for receive only ,,had bad solder connection at p.c.b.
it will look o.k.,,you will have to look close under your
magnified light,,while flexing the board.
by ramblingman
Saturday 31st Jan 2009, 11:28
Forum: CB Radio Repair and Troubleshooting
Topic: hey rick please help on this galaxy 88 freq drift please
Replies: 3
Views: 1549

hey rick please help on this galaxy 88 freq drift please

hello there,,,first before i started changing crystals..
i would first try resolldering all of the crystals.
and also check for cold solders in the v.c.o. area
by ramblingman
Saturday 29th Nov 2008, 12:11
Forum: CB Radio Repair and Troubleshooting
Topic: Test Your Knowledge Ranger Superstar 158EDX MOSFET model.
Replies: 40
Views: 14195

Test Your Knowledge Ranger Superstar 158EDX MOSFET model.

SOUNDS LIKE THE 10.695 MHZ CRYSTAL FILTER IS BAD
by ramblingman
Friday 28th Nov 2008, 14:18
Forum: CB Radio Repair and Troubleshooting
Topic: HAPPY THANKSGIVING TO ALL MY CB FRIENDS
Replies: 0
Views: 971

HAPPY THANKSGIVING TO ALL MY CB FRIENDS

I JUST WANTED TO WISH ALL THE GREAT GUYS THAT TAKE PART IN THIS FORUM A HAPPY THANKSGIVING....DONT EAT TO MUCH BIRD,,HA HA TOO LATE FOR THAT HUH??? IT IS A PRIVILEGE TO BE PART OF SUCH A GREAT COMMUNITY HERE..ALOT OF GREAT PEOPLE HERE,,WITH ALOT OF KNOWLEDGE OF RADIOS..I LEARN SOMETHING NEW ALL THE ...
by ramblingman
Tuesday 25th Nov 2008, 14:43
Forum: CB Radio Repair and Troubleshooting
Topic: General lee /connex
Replies: 7
Views: 3650

General lee /connex

cb tricks,,,look under the galaxy 77hml exact same as general lee minus the fancy faceplate..another thing you might want to check the diodes around the audio transformer..reason i say,,i have a cobra 148 gtl i bought off fleabay..and it does the same thing..and i discovered some dumdum hooked it up...
by ramblingman
Thursday 20th Nov 2008, 11:43
Forum: CB Radio Repair and Troubleshooting
Topic: Galaxy 99v no rec.
Replies: 1
Views: 1215

Galaxy 99v no rec.

O.K. First flip down into ssb mode..Does the s-meter peg with no incoming signal..If so check C-21,C-22. If this is not the case lets then find out if our audio section is working. With a metal probe in hand touch pin 4 of the audio chip The audio chip is a TA7222ap i.c. it has 10 legs inline and mo...
by ramblingman
Tuesday 18th Nov 2008, 17:35
Forum: CB Radio Repair and Troubleshooting
Topic: Superstar 3000 low-recieve
Replies: 4
Views: 2047

Superstar 3000 low-recieve

Your problem is most likely a bad front end overload protection diode. This usually happens when a nearby station keys up with high power on. I will have to check and see if i can find schematic,in order to give you the diode location numbers.But most the time,they will be two diodes of same specs.,...
by ramblingman
Tuesday 18th Nov 2008, 16:49
Forum: CB Radio Repair and Troubleshooting
Topic: Subject: Test Your Knowledge (President Lincoln/HR2510).
Replies: 35
Views: 11341

Subject: Test Your Knowledge (President Lincoln/HR2510).

Q134 is either O/C,,Or someone has installed it the wrong way around. Also Q124 May be O/C,,This could also lower the emitter of Q134. Also check for broken traces around Q134..Also coupling cap. C-120 could be O/C..Also i would check D-165 and VR-113 for O/C,,This controls the biasing for the drive...
by ramblingman
Tuesday 4th Nov 2008, 12:44
Forum: CB Radio Modifications
Topic: Have an idea for my Uniden 510.
Replies: 21
Views: 13132

Probably because the way it is down here..No one talks ssb local in our area..If you talk ssb it will have to be dx..And like the man said thats the fun part of cb radio..Buying a cheap little radio,ive got several used pro 510s for 5 bucks here..And just seeing how much you can get out of it before...
by ramblingman
Friday 3rd Oct 2008, 12:39
Forum: CB Radio Repair and Troubleshooting
Topic: Galaxy Melaka
Replies: 8
Views: 3370

Yes, it did check low on the transistor checker. TR-52 SSB Shunt was shorted, so i think hat is what took out the new MOD Amp TR-51 2SB754. When the fault was on, the voltage across all three pins of TR-51 was 13.0+ v.d.c In turn the radio was dead keying 10+ watts but had no forward and no AM Tx Au...
by ramblingman
Thursday 2nd Oct 2008, 18:00
Forum: CB Radio Repair and Troubleshooting
Topic: galaxy dx33 buzzing
Replies: 9
Views: 3176

Check C-128 , If this cap goes bad , it will cause
dc voltage to leak into audio causing a buzz sound on TX.
by ramblingman
Wednesday 1st Oct 2008, 12:28
Forum: CB Radio Repair and Troubleshooting
Topic: Galaxy Melaka
Replies: 8
Views: 3370

Just to let everyone know, I got this radio back going. The problem was i got a bad batch of new parts from h and y.. I changed these parts with some old stock i had and that did the trick..The moral to that story is, Dont ever assume just because they are new parts that they are good. I just bought...
by ramblingman
Saturday 27th Sep 2008, 12:33
Forum: CB Radio Repair and Troubleshooting
Topic: Galaxy Melaka
Replies: 8
Views: 3370

The voltage at mirror board is 14.0 v.d.c. I traced R-243 to the ssb shunt switch.So i decided to try and remove ssb shunt TR-52 and then retry unit. Removing TR-52 ssb shunt regained my AM RX. But still no AM TX Audio,Dead key still wide open. I am going to remove T-1 and check it. And check the re...
by ramblingman
Thursday 25th Sep 2008, 1:10
Forum: CB Radio Repair and Troubleshooting
Topic: Galaxy Melaka
Replies: 8
Views: 3370

Yes i removed the mirror board,disconnecting both finals and driver
Excessive current draw still there.R-243 Still gets extremely HOT.
by ramblingman
Wednesday 24th Sep 2008, 13:14
Forum: CB Radio Repair and Troubleshooting
Topic: Galaxy Melaka
Replies: 8
Views: 3370

Galaxy Melaka

Galaxy melaka- EPT-360014B NO RX on AM , period, NO RX Signal and No RX audio SSB RX Good AM TX dead key wide open 10+ watts dead key with no forward and no modulation SSB Tx also seems alittle low, But it does have TX Audio on SSB. But it only has about 5 or 6 watts peak output on SSB. Audio at P.A...
by ramblingman
Tuesday 23rd Sep 2008, 13:01
Forum: CB Radio Repair and Troubleshooting
Topic: rci 2990 base problems
Replies: 2
Views: 1711

One or both of the 2sc2290s on the amp board are probably shorted.
by ramblingman
Monday 22nd Sep 2008, 12:34
Forum: CB Radio Repair and Troubleshooting
Topic: General lee /connex
Replies: 7
Views: 3650

First check the mic,,if the shield gets shorted with the audio wire it can cause a squeal..If youve checked the mic and it is o.k..Then next id check the voltages at TR-51 the AM Mod Amp..If TR-51 shorts you dead key will be wide open, no forward modulation..And often it will cause a high pitched sq...
by ramblingman
Monday 22nd Sep 2008, 12:11
Forum: CB Radio Repair and Troubleshooting
Topic: 2950 TX issues
Replies: 6
Views: 2629

After taking a look at schematic..IC-4 is the 5 volt regulator.
And the 8 volt regulators are IC-6 AND IC-15 these are along
the right chassis rail,the 2 ics closes to the front of radio.
They should be 7808s and the 5 volt reg. should be a 7805.

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