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Sony Repair Tips




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Search: sony
Results: 20105
Make Model Symptom Problem Solution By
SONY SPPX90
Intemittently no talk handset - lock connector cn1 Unit had intermittent talk. found problem to be in handset.after inspection of main board on handset, i found connector cn1 was notfully locked.
SONY SPPX90
Intermittently no power handset - resolder battery terminals Unit would have intermittent power, or no power at all. foundhandset battery terminals refs 57 and 58 to be cold soldered. this seemsto be a common failure for this model. also pertains to ser # 202770.
SONY SPPX90
No audio out local handset receiver - replace jack board Unit has no audio out of local handset receiver. traced audiopath for receiver. found a crack in jack board, causing trace to be openbetween pin 1 of cn761 and r763. this seems to be a very common problemfor this model.
SONY SPPX30
All clear command in test mode Unit will not come out of test mode. it will respond to alltest mode commands but when 1,1# is pressed the unit gives an error beep.while unit was in test mode 1 ,2, # was accidentally pressed. this erasedthe id rom.
SONY SPPX30
Charge led on at all times - change ic601, p/n 8-759-030-78 Charge led on when battery not in base for charging, ic601/pin16 voltage was low dragging 9 volt down to 7.5-8.0 volts b+.
SONY SPPX30
Defective display/operation Unit displayed pppp...across the screen. often it wouldsearch to answer the call for over 30 seconds. the sub key switch padappeared to have suffered a static discharge and a punch through to thesub board underneath. the failure sample is being forwarded
SONY SPPER1
Noisy audio - replace speaker sp801, p/n 1-504-473-11 Speaker buzzes, noisy audio, vibration noise from speaker.
SONY SPPER1
No key tone and the caller cannot hear you No key tone and caller cannot hear you.
SONY SPPER1
Part number for rf unit reversed for base and h.s. Service manual shows incorrect part numbers for base and and hand set rf block assy. they have been reversed in the manual. correct part nos. should be: 1-467-471-11 rf unit (base) 1-467-470-11 rf unit (handset
SONY SPPD15
Line l1/l2 jack replacement Unit received with complaint of no line 2 on jack l1/l2. this unit has been refurbished and wrong jack (2pin) was installed. ordered part and received same jack - (2 connectors only). the other jack (-11) is not in stock, cannot verify if par
SONY SPPA40
Memory button sticks The memory record button sticks in the activated position withsubsequent lock up of the unit. as an alternate and more effective fix tothe sponge, mentioned in service bulletin tel0111, i have found trimmingthe shoulder of the button itself prevents it f
SONY SPP73
No channel change - replace ic4, p/n 8-759-264-14 Unit would ring and talk but would not stay locked whenchanging channels. found base transmit and receive freq. not changingwith handset. found ic4 to be bad.
SONY SPP73
Distorted audio - replace q14(872921202) & d12(871999563) Unit would talk but audio was distorted. put unit into testmode and found base to be causing problem. while checking unit, found dcvoltage levels to be low. check reg q14 emitter and it measured only2.5v. q14 and d12 were bad.
SONY SPP73
No power base - replace q14, p/n 8-729-212-02 Applied power to unit, and power led did not light. checkedregulator quality, and found q14 to be open.
SONY SPP72
Int grabs tel line when idle - replace rl1, p/n 1-515-693-11 Unit would intermittently grab tel line when idle. foundrelay to be intermittent.
SONY SPP72
No ring/talk - replace x501, p/n 1-760-313-11 Handset would not transmit or receive. checked pll ic 503 andx501, found x501 not vibrating at 10.24 mhz.
SONY SPP72
No audio handset - replace sp801, p/n 1-504-563-11 Unit had no audio handset speaker. audio signal to speakerwas ok. Ωed sp801 found to be open.
SONY SPP72
Low audio handset speaker - adjust vr501 Low audio out of handset speaker. found vr501 was notproperly adjusted.
SONY SPP57
No audio handset speaker - replace c624, p/n 1-124-126-00 Unit had no audio out of handset speaker. traced audio pathand found c624 to be open, this same cap is occasionally found coldsoldered, causing the same problem.
SONY SPP57
No talk - replace r37, p/n 1-216-065-00 Unit would not talk. after checking transmit and receive onboth base and hanset, i found the base not to be transmitting or receivingon channel b. ic5/pin 23 was not going high when on channel b.found r37 to be open.