Dismantle the radio, clean the chassis and interior of cabinet
Locate and repair the fault
Replace all wax coupling and decoupling capacitors
Replace mains filter and aerial capacitors using Class X or Class Y capacitors for safety reasons.
Check all resistors for signs of burning or deterioration
Replace electrolytic capacitors where necessary
Check all rubber grommets and tuning gang mounts and replace where necessary
Check internal wiring and replace where necessary
Check earth tags and connections and tighten where necessary
Check connections to, and safety of, mains dropper if applicable
Replace dial lamp bulbs if blown
Replace dial drive cord if worn or broken
Clean and lubricate dial drive pulleys, tuning capacitor bearings, all switches, potentiometers and valve bases
Test and replace valves as required
Carry out full RF & IF alignment
Check loudspeaker for cone damage and sound quality
Fit new mains lead and plug if not up to British Standard
Megger test insulation on mains transformer (where fitted)
Clean cabinet and knobs etc
Reassemble radio
Soak test for several days
IMPORTANT SAFETY NOTICE
Some radios have two pins on the rear for the mains plug, such as the Bush DAC90 and DAC90A. I will disconnect and insulate the two pins and fit a new mains lead directly to the radio, unless specifically asked not to by the customer. I will leave the two pins in place so as not to devalue the radio. |
